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Label Class Base field Conductor norm Rank Torsion CM Sato-Tate Regulator Period Leading coeff j-invariant Weierstrass coefficients Weierstrass equation
2.1-a1 2.1-a 3.3.621.1 \( 2 \) $1$ $\Z/6\Z$ $\mathrm{SU}(2)$ $0.463177856$ $245.5100312$ 0.760536356 \( \frac{5466989921733}{16} a^{2} - \frac{11727254606787}{16} a - \frac{7645773613401}{16} \) \( \bigl[a^{2} - 4\) , \( a^{2} - a - 4\) , \( a^{2} - a - 3\) , \( -2 a^{2} - 3 a - 5\) , \( 2 a^{2} + 5 a + 1\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-a-3\right){y}={x}^{3}+\left(a^{2}-a-4\right){x}^{2}+\left(-2a^{2}-3a-5\right){x}+2a^{2}+5a+1$
2.1-a2 2.1-a 3.3.621.1 \( 2 \) $1$ $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $0.308785237$ $163.6733541$ 0.760536356 \( -\frac{1571643}{64} a^{2} + \frac{787725}{64} a + \frac{9224631}{64} \) \( \bigl[a^{2} - 4\) , \( -1\) , \( a^{2} - a - 4\) , \( 5 a^{2} - 3 a - 30\) , \( 12 a^{2} - 6 a - 70\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-a-4\right){y}={x}^{3}-{x}^{2}+\left(5a^{2}-3a-30\right){x}+12a^{2}-6a-70$
2.1-a3 2.1-a 3.3.621.1 \( 2 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.154392618$ $163.6733541$ 0.760536356 \( -\frac{1539}{8} a^{2} + \frac{2349}{8} a + \frac{16335}{8} \) \( \bigl[a^{2} - 4\) , \( -1\) , \( a^{2} - a - 4\) , \( 4870798 a^{2} + 13000543 a + 5474690\) , \( 7027580342 a^{2} + 18757167732 a + 7898882095\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-a-4\right){y}={x}^{3}-{x}^{2}+\left(4870798a^{2}+13000543a+5474690\right){x}+7027580342a^{2}+18757167732a+7898882095$
2.1-a4 2.1-a 3.3.621.1 \( 2 \) $1$ $\Z/6\Z$ $\mathrm{SU}(2)$ $0.463177856$ $491.0200624$ 0.760536356 \( -\frac{209947635}{2} a^{2} + \frac{109992987}{2} a + \frac{1202011713}{2} \) \( \bigl[a\) , \( a^{2} - a - 3\) , \( a + 1\) , \( -2807733302 a^{2} - 7494062245 a - 3155845004\) , \( 229857827468862 a^{2} + 613508720575135 a + 258356331752748\bigr] \) ${y}^2+a{x}{y}+\left(a+1\right){y}={x}^{3}+\left(a^{2}-a-3\right){x}^{2}+\left(-2807733302a^{2}-7494062245a-3155845004\right){x}+229857827468862a^{2}+613508720575135a+258356331752748$
2.1-a5 2.1-a 3.3.621.1 \( 2 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.617570475$ $40.91833853$ 0.760536356 \( -\frac{26181894141}{8} a^{2} + \frac{13694926851}{8} a + \frac{149976258561}{8} \) \( \bigl[a\) , \( 0\) , \( a\) , \( 2842829 a^{2} - 1489575 a - 16276475\) , \( 4197519584 a^{2} - 2199401188 a - 24032683196\bigr] \) ${y}^2+a{x}{y}+a{y}={x}^{3}+\left(2842829a^{2}-1489575a-16276475\right){x}+4197519584a^{2}-2199401188a-24032683196$
2.1-a6 2.1-a 3.3.621.1 \( 2 \) $1$ $\Z/2\Z\oplus\Z/6\Z$ $\mathrm{SU}(2)$ $0.926355713$ $491.0200624$ 0.760536356 \( \frac{349421337}{4} a^{2} + \frac{928661445}{4} a + \frac{390758859}{4} \) \( \bigl[a\) , \( -a^{2} + 2 a + 3\) , \( a^{2} - a - 3\) , \( -324 a^{2} - 871 a - 367\) , \( 8530 a^{2} + 22770 a + 9588\bigr] \) ${y}^2+a{x}{y}+\left(a^{2}-a-3\right){y}={x}^{3}+\left(-a^{2}+2a+3\right){x}^{2}+\left(-324a^{2}-871a-367\right){x}+8530a^{2}+22770a+9588$
2.1-a7 2.1-a 3.3.621.1 \( 2 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.154392618$ $81.83667707$ 0.760536356 \( \frac{28809189}{4096} a^{2} + \frac{39903597}{4096} a + \frac{12938967}{4096} \) \( \bigl[1\) , \( a^{2} - 4\) , \( 0\) , \( 30 a^{2} - 15 a - 170\) , \( 1575 a^{2} - 825 a - 9017\bigr] \) ${y}^2+{x}{y}={x}^{3}+\left(a^{2}-4\right){x}^{2}+\left(30a^{2}-15a-170\right){x}+1575a^{2}-825a-9017$
2.1-a8 2.1-a 3.3.621.1 \( 2 \) $1$ $\Z/6\Z$ $\mathrm{SU}(2)$ $1.852711427$ $122.7550156$ 0.760536356 \( \frac{233506890597662991}{2} a^{2} + \frac{623248358664043881}{2} a + \frac{262457817330484575}{2} \) \( \bigl[1\) , \( -a^{2} + 2 a + 5\) , \( 1\) , \( 215 a^{2} - 108 a - 1240\) , \( 2267 a^{2} - 1197 a - 12954\bigr] \) ${y}^2+{x}{y}+{y}={x}^{3}+\left(-a^{2}+2a+5\right){x}^{2}+\left(215a^{2}-108a-1240\right){x}+2267a^{2}-1197a-12954$
3.1-a1 3.1-a 3.3.621.1 \( 3 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $22.86965719$ 1.835455460 \( -\frac{4864257163858}{9} a^{2} + \frac{7646267837608}{27} a + \frac{9283351677427}{3} \) \( \bigl[a^{2} - 4\) , \( -a^{2} + 3\) , \( a^{2} - 4\) , \( 2753065 a^{2} - 1442542 a - 15762534\) , \( 4005913593 a^{2} - 2099004172 a - 22935652916\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-4\right){y}={x}^{3}+\left(-a^{2}+3\right){x}^{2}+\left(2753065a^{2}-1442542a-15762534\right){x}+4005913593a^{2}-2099004172a-22935652916$
3.1-a2 3.1-a 3.3.621.1 \( 3 \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $182.9572575$ 1.835455460 \( -\frac{2668076}{9} a^{2} + \frac{337588}{3} a + \frac{5441171}{3} \) \( \bigl[a^{2} - 4\) , \( -a^{2} + 3\) , \( a^{2} - 4\) , \( 172090 a^{2} - 90172 a - 985294\) , \( 62840112 a^{2} - 32926736 a - 359787841\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-4\right){y}={x}^{3}+\left(-a^{2}+3\right){x}^{2}+\left(172090a^{2}-90172a-985294\right){x}+62840112a^{2}-32926736a-359787841$
3.1-a3 3.1-a 3.3.621.1 \( 3 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $182.9572575$ 1.835455460 \( \frac{445348577272}{3} a^{2} + 396223315968 a + 166854722323 \) \( \bigl[a\) , \( -a + 1\) , \( a^{2} - 4\) , \( 5246 a^{2} - 2751 a - 30034\) , \( -325215 a^{2} + 170404 a + 1862002\bigr] \) ${y}^2+a{x}{y}+\left(a^{2}-4\right){y}={x}^{3}+\left(-a+1\right){x}^{2}+\left(5246a^{2}-2751a-30034\right){x}-325215a^{2}+170404a+1862002$
3.1-a4 3.1-a 3.3.621.1 \( 3 \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $365.9145150$ 1.835455460 \( \frac{294352}{3} a^{2} + \frac{786496}{3} a + 112633 \) \( \bigl[a\) , \( -a + 1\) , \( a^{2} - 4\) , \( 656 a^{2} - 346 a - 3754\) , \( 7170 a^{2} - 3758 a - 41051\bigr] \) ${y}^2+a{x}{y}+\left(a^{2}-4\right){y}={x}^{3}+\left(-a+1\right){x}^{2}+\left(656a^{2}-346a-3754\right){x}+7170a^{2}-3758a-41051$
3.1-a5 3.1-a 3.3.621.1 \( 3 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $91.47862876$ 1.835455460 \( \frac{16546630718}{3} a^{2} - \frac{35494158640}{3} a - 7713667273 \) \( \bigl[1\) , \( a\) , \( a^{2} - a - 4\) , \( 2733518 a^{2} - 1432298 a - 15650617\) , \( 7412073534 a^{2} - 3883751585 a - 42437447041\bigr] \) ${y}^2+{x}{y}+\left(a^{2}-a-4\right){y}={x}^{3}+a{x}^{2}+\left(2733518a^{2}-1432298a-15650617\right){x}+7412073534a^{2}-3883751585a-42437447041$
3.1-a6 3.1-a 3.3.621.1 \( 3 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $182.9572575$ 1.835455460 \( -\frac{244}{3} a^{2} - 444 a + 1133 \) \( \bigl[1\) , \( a\) , \( 0\) , \( -7 a^{2} + 4 a + 42\) , \( 10 a^{2} - 5 a - 57\bigr] \) ${y}^2+{x}{y}={x}^{3}+a{x}^{2}+\left(-7a^{2}+4a+42\right){x}+10a^{2}-5a-57$
3.1-b1 3.1-b 3.3.621.1 \( 3 \) 0 $\Z/5\Z$ $\mathrm{SU}(2)$ $1$ $85.01274363$ 0.682288777 \( \frac{335872}{9} a^{2} - \frac{262144}{9} a - 233472 \) \( \bigl[0\) , \( a^{2} - a - 5\) , \( 1\) , \( 6508997 a^{2} - 3410561 a - 37266928\) , \( -14611636367 a^{2} + 7656152579 a + 83658174958\bigr] \) ${y}^2+{y}={x}^{3}+\left(a^{2}-a-5\right){x}^{2}+\left(6508997a^{2}-3410561a-37266928\right){x}-14611636367a^{2}+7656152579a+83658174958$
3.1-b2 3.1-b 3.3.621.1 \( 3 \) 0 $\mathsf{trivial}$ $\mathrm{SU}(2)$ $1$ $0.680101949$ 0.682288777 \( -\frac{40606410660136307924992}{3} a^{2} - 36127240514390937600000 a - 15213640854032899846144 \) \( \bigl[0\) , \( a^{2} - 5\) , \( 1\) , \( -326 a^{2} + 301 a + 1520\) , \( 3832 a^{2} - 769 a - 25247\bigr] \) ${y}^2+{y}={x}^{3}+\left(a^{2}-5\right){x}^{2}+\left(-326a^{2}+301a+1520\right){x}+3832a^{2}-769a-25247$
6.1-a1 6.1-a 3.3.621.1 \( 2 \cdot 3 \) 0 $\Z/4\Z$ $\mathrm{SU}(2)$ $1$ $181.3416296$ 1.819247232 \( -\frac{107343409}{48} a^{2} + \frac{632115317}{144} a + \frac{946003829}{48} \) \( \bigl[a\) , \( -a^{2} + a + 5\) , \( a\) , \( -3 a - 8\) , \( 2 a + 3\bigr] \) ${y}^2+a{x}{y}+a{y}={x}^{3}+\left(-a^{2}+a+5\right){x}^{2}+\left(-3a-8\right){x}+2a+3$
6.1-a2 6.1-a 3.3.621.1 \( 2 \cdot 3 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $181.3416296$ 1.819247232 \( \frac{192965}{6} a^{2} - \frac{1162105}{18} a - \frac{252931}{6} \) \( \bigl[1\) , \( a^{2} - 2 a - 5\) , \( 0\) , \( -492762773 a^{2} - 1315222814 a - 553857065\) , \( -15501697485481 a^{2} - 41375256591378 a - 17423647227471\bigr] \) ${y}^2+{x}{y}={x}^{3}+\left(a^{2}-2a-5\right){x}^{2}+\left(-492762773a^{2}-1315222814a-553857065\right){x}-15501697485481a^{2}-41375256591378a-17423647227471$
6.1-a3 6.1-a 3.3.621.1 \( 2 \cdot 3 \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $181.3416296$ 1.819247232 \( -\frac{134519}{324} a^{2} + \frac{90779}{108} a + \frac{21783}{4} \) \( \bigl[1\) , \( a^{2} - a - 5\) , \( a\) , \( -12 a^{2} - 30 a - 7\) , \( 46 a^{2} + 122 a + 49\bigr] \) ${y}^2+{x}{y}+a{y}={x}^{3}+\left(a^{2}-a-5\right){x}^{2}+\left(-12a^{2}-30a-7\right){x}+46a^{2}+122a+49$
6.1-a4 6.1-a 3.3.621.1 \( 2 \cdot 3 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $22.66770370$ 1.819247232 \( \frac{178329943}{4374} a^{2} - \frac{401008297}{4374} a - \frac{65930071}{1458} \) \( \bigl[1\) , \( a^{2} - a - 5\) , \( a\) , \( 23 a^{2} + 65 a + 33\) , \( 268 a^{2} + 717 a + 300\bigr] \) ${y}^2+{x}{y}+a{y}={x}^{3}+\left(a^{2}-a-5\right){x}^{2}+\left(23a^{2}+65a+33\right){x}+268a^{2}+717a+300$
8.1-a1 8.1-a 3.3.621.1 \( 2^{3} \) 0 $\Z/3\Z$ $\mathrm{SU}(2)$ $1$ $46.46722047$ 1.864665325 \( -\frac{1631400670906281}{2048} a^{2} - \frac{4354337415066993}{2048} a - \frac{1833666912957879}{2048} \) \( \bigl[a^{2} - 4\) , \( -a^{2} + 2 a + 5\) , \( 1\) , \( -89 a^{2} + 171 a + 133\) , \( 2719 a^{2} - 5819 a - 3782\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+{y}={x}^{3}+\left(-a^{2}+2a+5\right){x}^{2}+\left(-89a^{2}+171a+133\right){x}+2719a^{2}-5819a-3782$
8.1-a2 8.1-a 3.3.621.1 \( 2^{3} \) 0 $\mathsf{trivial}$ $\mathrm{SU}(2)$ $1$ $15.48907349$ 1.864665325 \( -\frac{12247091572509}{8589934592} a^{2} - \frac{33703875052389}{8589934592} a - \frac{14465648733759}{8589934592} \) \( \bigl[1\) , \( a^{2} - 4\) , \( a + 1\) , \( 24 a^{2} - 15 a - 129\) , \( 872 a^{2} - 447 a - 5021\bigr] \) ${y}^2+{x}{y}+\left(a+1\right){y}={x}^{3}+\left(a^{2}-4\right){x}^{2}+\left(24a^{2}-15a-129\right){x}+872a^{2}-447a-5021$
8.1-b1 8.1-b 3.3.621.1 \( 2^{3} \) 0 $\Z/5\Z$ $\mathrm{SU}(2)$ $1$ $144.2839272$ 1.157982911 \( \frac{43747}{16} a^{2} - \frac{61963}{32} a - \frac{121975}{8} \) \( \bigl[a^{2} - 4\) , \( a^{2} - 2 a - 5\) , \( a^{2} - 3\) , \( 4 a^{2} - 9 a - 11\) , \( 2 a^{2} - 5 a - 5\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(a^{2}-2a-5\right){x}^{2}+\left(4a^{2}-9a-11\right){x}+2a^{2}-5a-5$
8.1-b2 8.1-b 3.3.621.1 \( 2^{3} \) 0 $\mathsf{trivial}$ $\mathrm{SU}(2)$ $1$ $1.154271418$ 1.157982911 \( -\frac{38209767720213}{8388608} a^{2} + \frac{327852451117045}{33554432} a + \frac{213749253814679}{33554432} \) \( \bigl[a^{2} - 4\) , \( -a + 1\) , \( 0\) , \( -10274 a^{2} + 5388 a + 58811\) , \( 18029167 a^{2} - 9446842 a - 103225114\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}={x}^{3}+\left(-a+1\right){x}^{2}+\left(-10274a^{2}+5388a+58811\right){x}+18029167a^{2}-9446842a-103225114$
8.1-c1 8.1-c 3.3.621.1 \( 2^{3} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $6.057788465$ 0.729272032 \( \frac{3384752311853731}{32} a^{2} + \frac{4517085807268307}{16} a + \frac{7608809330544671}{64} \) \( \bigl[a^{2} - 4\) , \( a^{2} - 3\) , \( a^{2} - a - 3\) , \( 2936 a^{2} - 1535 a - 16807\) , \( 271509 a^{2} - 142261 a - 1554510\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-a-3\right){y}={x}^{3}+\left(a^{2}-3\right){x}^{2}+\left(2936a^{2}-1535a-16807\right){x}+271509a^{2}-142261a-1554510$
8.1-c2 8.1-c 3.3.621.1 \( 2^{3} \) 0 $\Z/6\Z$ $\mathrm{SU}(2)$ $1$ $163.5602885$ 0.729272032 \( \frac{17651949}{2} a^{2} - 18895716 a - \frac{49294393}{4} \) \( \bigl[a^{2} - 4\) , \( a^{2} - 3\) , \( a^{2} - a - 3\) , \( -309 a^{2} + 165 a + 1773\) , \( -7644 a^{2} + 4008 a + 43768\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-a-3\right){y}={x}^{3}+\left(a^{2}-3\right){x}^{2}+\left(-309a^{2}+165a+1773\right){x}-7644a^{2}+4008a+43768$
8.1-c3 8.1-c 3.3.621.1 \( 2^{3} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $6.057788465$ 0.729272032 \( -\frac{11916959145}{4096} a^{2} - \frac{28064196953}{4096} a - \frac{2679109859}{2048} \) \( \bigl[a\) , \( -a^{2} + 2 a + 4\) , \( 0\) , \( 188 a^{2} - 99 a - 1071\) , \( 2416 a^{2} - 1265 a - 13835\bigr] \) ${y}^2+a{x}{y}={x}^{3}+\left(-a^{2}+2a+4\right){x}^{2}+\left(188a^{2}-99a-1071\right){x}+2416a^{2}-1265a-13835$
8.1-c4 8.1-c 3.3.621.1 \( 2^{3} \) 0 $\Z/6\Z$ $\mathrm{SU}(2)$ $1$ $163.5602885$ 0.729272032 \( -\frac{30873}{16} a^{2} + \frac{41319}{16} a + \frac{54745}{8} \) \( \bigl[a\) , \( -a^{2} + 2 a + 4\) , \( 0\) , \( 8 a^{2} - 4 a - 41\) , \( -8 a^{2} + 5 a + 46\bigr] \) ${y}^2+a{x}{y}={x}^{3}+\left(-a^{2}+2a+4\right){x}^{2}+\left(8a^{2}-4a-41\right){x}-8a^{2}+5a+46$
9.1-a1 9.1-a 3.3.621.1 \( 3^{2} \) 0 $\mathsf{trivial}$ $\mathrm{SU}(2)$ $1$ $33.93037453$ 2.723158056 \( -\frac{40606410660136307924992}{3} a^{2} - 36127240514390937600000 a - 15213640854032899846144 \) \( \bigl[0\) , \( a^{2} - a - 3\) , \( 1\) , \( -4004 a^{2} + 8541 a + 5577\) , \( 267480 a^{2} - 573570 a - 373975\bigr] \) ${y}^2+{y}={x}^{3}+\left(a^{2}-a-3\right){x}^{2}+\left(-4004a^{2}+8541a+5577\right){x}+267480a^{2}-573570a-373975$
9.1-a2 9.1-a 3.3.621.1 \( 3^{2} \) 0 $\mathsf{trivial}$ $\mathrm{SU}(2)$ $1$ $33.93037453$ 2.723158056 \( \frac{335872}{9} a^{2} - \frac{262144}{9} a - 233472 \) \( \bigl[0\) , \( -a^{2} + 2 a + 3\) , \( 1\) , \( 4111 a^{2} - 2157 a - 23529\) , \( 233931 a^{2} - 122571 a - 1339369\bigr] \) ${y}^2+{y}={x}^{3}+\left(-a^{2}+2a+3\right){x}^{2}+\left(4111a^{2}-2157a-23529\right){x}+233931a^{2}-122571a-1339369$
9.1-b1 9.1-b 3.3.621.1 \( 3^{2} \) $1$ $\mathsf{trivial}$ $-27$ $N(\mathrm{U}(1))$ $2.392243879$ $1.837900525$ 1.058602473 \( -12288000 \) \( \bigl[0\) , \( a^{2} - 3\) , \( 1\) , \( 9180 a^{2} - 4809 a - 52557\) , \( 761961 a^{2} - 399249 a - 4362568\bigr] \) ${y}^2+{y}={x}^{3}+\left(a^{2}-3\right){x}^{2}+\left(9180a^{2}-4809a-52557\right){x}+761961a^{2}-399249a-4362568$
9.1-b2 9.1-b 3.3.621.1 \( 3^{2} \) $1$ $\Z/3\Z$ $-3$ $N(\mathrm{U}(1))$ $0.797414626$ $49.62331419$ 1.058602473 \( 0 \) \( \bigl[0\) , \( a^{2} - 3\) , \( 1\) , \( a + 3\) , \( 3045 a^{2} - 1595 a - 17433\bigr] \) ${y}^2+{y}={x}^{3}+\left(a^{2}-3\right){x}^{2}+\left(a+3\right){x}+3045a^{2}-1595a-17433$
9.1-b3 9.1-b 3.3.621.1 \( 3^{2} \) $1$ $\Z/3\Z$ $-3$ $N(\mathrm{U}(1))$ $0.265804875$ $148.8699425$ 1.058602473 \( 0 \) \( \bigl[0\) , \( 0\) , \( 1\) , \( 0\) , \( 0\bigr] \) ${y}^2+{y}={x}^{3}$
9.1-b4 9.1-b 3.3.621.1 \( 3^{2} \) $1$ $\Z/3\Z$ $-27$ $N(\mathrm{U}(1))$ $0.088601625$ $446.6098277$ 1.058602473 \( -12288000 \) \( \bigl[0\) , \( -a^{2} + 2 a + 3\) , \( 1\) , \( 78 a^{2} - 43 a - 441\) , \( -548 a^{2} + 288 a + 3135\bigr] \) ${y}^2+{y}={x}^{3}+\left(-a^{2}+2a+3\right){x}^{2}+\left(78a^{2}-43a-441\right){x}-548a^{2}+288a+3135$
9.1-c1 9.1-c 3.3.621.1 \( 3^{2} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $54.59943124$ 1.095499851 \( -\frac{244}{3} a^{2} - 444 a + 1133 \) \( \bigl[a^{2} - 4\) , \( -a^{2} + 2 a + 5\) , \( a^{2} - 3\) , \( -2 a^{2} - a + 12\) , \( -5 a^{2} - 4 a + 11\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(-a^{2}+2a+5\right){x}^{2}+\left(-2a^{2}-a+12\right){x}-5a^{2}-4a+11$
9.1-c2 9.1-c 3.3.621.1 \( 3^{2} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $54.59943124$ 1.095499851 \( \frac{16546630718}{3} a^{2} - \frac{35494158640}{3} a - 7713667273 \) \( \bigl[a^{2} - 4\) , \( -a^{2} + 2 a + 5\) , \( a + 1\) , \( 1713 a^{2} - 881 a - 9847\) , \( -113493 a^{2} + 59505 a + 649702\bigr] \) ${y}^2+\left(a^{2}-4\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(-a^{2}+2a+5\right){x}^{2}+\left(1713a^{2}-881a-9847\right){x}-113493a^{2}+59505a+649702$
9.1-c3 9.1-c 3.3.621.1 \( 3^{2} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $27.29971562$ 1.095499851 \( -\frac{4864257163858}{9} a^{2} + \frac{7646267837608}{27} a + \frac{9283351677427}{3} \) \( \bigl[a\) , \( -a\) , \( 1\) , \( 1738 a^{2} - 911 a - 9951\) , \( -63114 a^{2} + 33075 a + 361343\bigr] \) ${y}^2+a{x}{y}+{y}={x}^{3}-a{x}^{2}+\left(1738a^{2}-911a-9951\right){x}-63114a^{2}+33075a+361343$
9.1-c4 9.1-c 3.3.621.1 \( 3^{2} \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $109.1988624$ 1.095499851 \( -\frac{2668076}{9} a^{2} + \frac{337588}{3} a + \frac{5441171}{3} \) \( \bigl[a\) , \( -a\) , \( 1\) , \( 108 a^{2} - 56 a - 621\) , \( -972 a^{2} + 513 a + 5555\bigr] \) ${y}^2+a{x}{y}+{y}={x}^{3}-a{x}^{2}+\left(108a^{2}-56a-621\right){x}-972a^{2}+513a+5555$
9.1-c5 9.1-c 3.3.621.1 \( 3^{2} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $27.29971562$ 1.095499851 \( \frac{445348577272}{3} a^{2} + 396223315968 a + 166854722323 \) \( \bigl[1\) , \( -a^{2} + 2 a + 5\) , \( 0\) , \( -12\) , \( 12 a^{2} - 24 a - 63\bigr] \) ${y}^2+{x}{y}={x}^{3}+\left(-a^{2}+2a+5\right){x}^{2}-12{x}+12a^{2}-24a-63$
9.1-c6 9.1-c 3.3.621.1 \( 3^{2} \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $109.1988624$ 1.095499851 \( \frac{294352}{3} a^{2} + \frac{786496}{3} a + 112633 \) \( \bigl[1\) , \( -a^{2} + 2 a + 5\) , \( 0\) , \( 3\) , \( 0\bigr] \) ${y}^2+{x}{y}={x}^{3}+\left(-a^{2}+2a+5\right){x}^{2}+3{x}$
12.2-a1 12.2-a 3.3.621.1 \( 2^{2} \cdot 3 \) 0 $\mathsf{trivial}$ $\mathrm{SU}(2)$ $1$ $25.15679629$ 1.009507461 \( -\frac{4096}{3} a^{2} + 4096 a \) \( \bigl[0\) , \( -a^{2} + 2 a + 5\) , \( a^{2} - a - 4\) , \( 4\) , \( a - 1\bigr] \) ${y}^2+\left(a^{2}-a-4\right){y}={x}^{3}+\left(-a^{2}+2a+5\right){x}^{2}+4{x}+a-1$
16.2-a1 16.2-a 3.3.621.1 \( 2^{4} \) 0 $\mathsf{trivial}$ $\mathrm{SU}(2)$ $1$ $46.91567381$ 1.882661138 \( -1689 a^{2} + \frac{821}{2} a + \frac{277}{2} \) \( \bigl[a^{2} - a - 4\) , \( -a^{2} + 4\) , \( 0\) , \( -12 a^{2} + 22 a + 28\) , \( -41 a^{2} + 85 a + 65\bigr] \) ${y}^2+\left(a^{2}-a-4\right){x}{y}={x}^{3}+\left(-a^{2}+4\right){x}^{2}+\left(-12a^{2}+22a+28\right){x}-41a^{2}+85a+65$
16.2-b1 16.2-b 3.3.621.1 \( 2^{4} \) $1$ $\Z/3\Z$ $\mathrm{SU}(2)$ $0.100989150$ $184.7894684$ 2.246608453 \( -\frac{29789055}{8} a^{2} + \frac{63888759}{8} a + 5207940 \) \( \bigl[a^{2} - a - 4\) , \( -1\) , \( 0\) , \( -43 a^{2} + 92 a + 61\) , \( 289 a^{2} - 620 a - 404\bigr] \) ${y}^2+\left(a^{2}-a-4\right){x}{y}={x}^{3}-{x}^{2}+\left(-43a^{2}+92a+61\right){x}+289a^{2}-620a-404$
16.2-b2 16.2-b 3.3.621.1 \( 2^{4} \) $1$ $\mathsf{trivial}$ $\mathrm{SU}(2)$ $0.302967450$ $61.59648949$ 2.246608453 \( \frac{29565}{2} a^{2} - 7452 a - \frac{168021}{2} \) \( \bigl[a^{2} - 3\) , \( a^{2} - 3\) , \( a^{2} - 3\) , \( -a^{2} + 8 a + 1\) , \( 99 a^{2} - 206 a - 137\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(a^{2}-3\right){x}^{2}+\left(-a^{2}+8a+1\right){x}+99a^{2}-206a-137$
16.3-a1 16.3-a 3.3.621.1 \( 2^{4} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $26.95710236$ 1.081751255 \( \frac{5466989921733}{16} a^{2} - \frac{11727254606787}{16} a - \frac{7645773613401}{16} \) \( \bigl[a^{2} - a - 4\) , \( -a - 1\) , \( a^{2} - 3\) , \( -7138 a^{2} - 19054 a - 8027\) , \( 897541 a^{2} + 2395607 a + 1008819\bigr] \) ${y}^2+\left(a^{2}-a-4\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(-a-1\right){x}^{2}+\left(-7138a^{2}-19054a-8027\right){x}+897541a^{2}+2395607a+1008819$
16.3-a2 16.3-a 3.3.621.1 \( 2^{4} \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $107.8284094$ 1.081751255 \( -\frac{1571643}{64} a^{2} + \frac{787725}{64} a + \frac{9224631}{64} \) \( \bigl[a^{2} - a - 4\) , \( a - 1\) , \( a + 1\) , \( -608 a^{2} - 1625 a - 686\) , \( 8551 a^{2} + 22822 a + 9608\bigr] \) ${y}^2+\left(a^{2}-a-4\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a-1\right){x}^{2}+\left(-608a^{2}-1625a-686\right){x}+8551a^{2}+22822a+9608$
16.3-a3 16.3-a 3.3.621.1 \( 2^{4} \) 0 $\Z/4\Z$ $\mathrm{SU}(2)$ $1$ $107.8284094$ 1.081751255 \( -\frac{1539}{8} a^{2} + \frac{2349}{8} a + \frac{16335}{8} \) \( \bigl[a^{2} - a - 4\) , \( a - 1\) , \( a + 1\) , \( 19243798971 a^{2} + 51363221412 a + 21629706354\) , \( 1744617433374617 a^{2} + 4656521908472909 a + 1960920649785671\bigr] \) ${y}^2+\left(a^{2}-a-4\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a-1\right){x}^{2}+\left(19243798971a^{2}+51363221412a+21629706354\right){x}+1744617433374617a^{2}+4656521908472909a+1960920649785671$
16.3-a4 16.3-a 3.3.621.1 \( 2^{4} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $26.95710236$ 1.081751255 \( \frac{28809189}{4096} a^{2} + \frac{39903597}{4096} a + \frac{12938967}{4096} \) \( \bigl[a^{2} - 3\) , \( -a^{2} + 3\) , \( a + 1\) , \( -27 a^{2} - 79 a - 44\) , \( -165 a^{2} - 647 a - 629\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(-a^{2}+3\right){x}^{2}+\left(-27a^{2}-79a-44\right){x}-165a^{2}-647a-629$
16.3-a5 16.3-a 3.3.621.1 \( 2^{4} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $53.91420473$ 1.081751255 \( \frac{233506890597662991}{2} a^{2} + \frac{623248358664043881}{2} a + \frac{262457817330484575}{2} \) \( \bigl[a^{2} - 3\) , \( -a^{2} + a + 3\) , \( 0\) , \( -3 a^{2} - 84 a - 164\) , \( 291 a^{2} + 437 a - 402\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}={x}^{3}+\left(-a^{2}+a+3\right){x}^{2}+\left(-3a^{2}-84a-164\right){x}+291a^{2}+437a-402$
16.3-a6 16.3-a 3.3.621.1 \( 2^{4} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $53.91420473$ 1.081751255 \( -\frac{26181894141}{8} a^{2} + \frac{13694926851}{8} a + \frac{149976258561}{8} \) \( \bigl[a + 1\) , \( a^{2} - 2 a - 4\) , \( a + 1\) , \( 318018 a^{2} - 166637 a - 1820794\) , \( 156771774 a^{2} - 82144711 a - 897588754\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a^{2}-2a-4\right){x}^{2}+\left(318018a^{2}-166637a-1820794\right){x}+156771774a^{2}-82144711a-897588754$
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  *The rank, regulator and analytic order of Ш are not known for all curves in the database; curves for which these are unknown will not appear in searches specifying one of these quantities.