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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
64.7-a1 64.7-a 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $57.28306679$ 1.611212134 \( \frac{427}{4} a^{2} + \frac{383}{2} a - \frac{47}{2} \) \( \bigl[a^{2} - 3\) , \( 1\) , \( 0\) , \( -1090739352869 a^{2} + 577346424073 a + 4634704800810\) , \( 3861852626891805689 a^{2} - 2044142625427945364 a - 16409554549208060949\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}={x}^{3}+{x}^{2}+\left(-1090739352869a^{2}+577346424073a+4634704800810\right){x}+3861852626891805689a^{2}-2044142625427945364a-16409554549208060949$
64.7-a2 64.7-a 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $57.28306679$ 1.611212134 \( \frac{32251567931279}{16} a^{2} + \frac{21655756210331}{8} a - \frac{13765401110581}{8} \) \( \bigl[a^{2} - 3\) , \( -a^{2} - a + 4\) , \( a^{2} - 3\) , \( 1698582370190 a^{2} - 899087811257 a - 7217515206526\) , \( -1762034893335112832 a^{2} + 932674283807826223 a + 7487133894869004409\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(-a^{2}-a+4\right){x}^{2}+\left(1698582370190a^{2}-899087811257a-7217515206526\right){x}-1762034893335112832a^{2}+932674283807826223a+7487133894869004409$
64.7-a3 64.7-a 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $114.5661335$ 1.611212134 \( \frac{130050481}{256} a^{2} + \frac{87514925}{128} a - \frac{54929731}{128} \) \( \bigl[a^{2} - 3\) , \( -a^{2} - a + 4\) , \( a^{2} - 3\) , \( 111924466010 a^{2} - 59243475582 a - 475582785731\) , \( -24375873611518938 a^{2} + 12902554057702025 a + 103576512715027461\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(-a^{2}-a+4\right){x}^{2}+\left(111924466010a^{2}-59243475582a-475582785731\right){x}-24375873611518938a^{2}+12902554057702025a+103576512715027461$
64.7-a4 64.7-a 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $114.5661335$ 1.611212134 \( \frac{200481}{16} a^{2} - \frac{325027}{8} a + \frac{233973}{8} \) \( \bigl[a + 1\) , \( a^{2} - a - 2\) , \( a + 1\) , \( 2665494177 a^{2} - 1410890263 a - 11326059360\) , \( 101937460779857 a^{2} - 53957188127012 a - 433146596953681\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a^{2}-a-2\right){x}^{2}+\left(2665494177a^{2}-1410890263a-11326059360\right){x}+101937460779857a^{2}-53957188127012a-433146596953681$
64.7-a5 64.7-a 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $28.64153339$ 1.611212134 \( \frac{4108077233}{65536} a^{2} - \frac{5810733523}{32768} a + \frac{2294990397}{32768} \) \( \bigl[a + 1\) , \( -a^{2} + 2\) , \( a^{2} - 3\) , \( -2894790049560 a^{2} + 1532260369223 a + 12300369748958\) , \( -6521086825648874308 a^{2} + 3451719377275691295 a + 27709014383527172465\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(-a^{2}+2\right){x}^{2}+\left(-2894790049560a^{2}+1532260369223a+12300369748958\right){x}-6521086825648874308a^{2}+3451719377275691295a+27709014383527172465$
64.7-a6 64.7-a 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $3.580191674$ 1.611212134 \( -\frac{10154621765056003}{2} a^{2} + 2687505089603077 a + 21574207961612782 \) \( \bigl[a + 1\) , \( -a^{2} + 2\) , \( a + 1\) , \( 7908272 a^{2} - 4185996 a - 33603389\) , \( 17708327376 a^{2} - 9373311330 a - 75245171795\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(-a^{2}+2\right){x}^{2}+\left(7908272a^{2}-4185996a-33603389\right){x}+17708327376a^{2}-9373311330a-75245171795$
64.7-a7 64.7-a 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $28.64153339$ 1.611212134 \( \frac{8525185037}{4} a^{2} - \frac{12150636535}{2} a + \frac{5069473275}{2} \) \( \bigl[a + 1\) , \( -a^{2} + 2\) , \( a + 1\) , \( 494267 a^{2} - 261626 a - 2100214\) , \( 276978244 a^{2} - 146609178 a - 1176919487\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(-a^{2}+2\right){x}^{2}+\left(494267a^{2}-261626a-2100214\right){x}+276978244a^{2}-146609178a-1176919487$
64.7-a8 64.7-a 3.3.316.1 \( 2^{6} \) 0 $\Z/4\Z$ $\mathrm{SU}(2)$ $1$ $7.160383349$ 1.611212134 \( \frac{89069256294443128323}{2} a^{2} - 125302919348047971845 a + 49111676741552886754 \) \( \bigl[a + 1\) , \( -a^{2} - a + 4\) , \( a + 1\) , \( 25 a^{2} + 40 a - 45\) , \( -3190 a^{2} - 4343 a + 2671\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(-a^{2}-a+4\right){x}^{2}+\left(25a^{2}+40a-45\right){x}-3190a^{2}-4343a+2671$
64.7-b1 64.7-b 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z$ $-4$ $N(\mathrm{U}(1))$ $1$ $203.9537268$ 2.868323380 \( 1728 \) \( \bigl[a^{2} + a - 2\) , \( -a^{2} + 2\) , \( a^{2} - 3\) , \( a^{2} + a - 1\) , \( 2 a^{2} + 2 a - 3\bigr] \) ${y}^2+\left(a^{2}+a-2\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(-a^{2}+2\right){x}^{2}+\left(a^{2}+a-1\right){x}+2a^{2}+2a-3$
64.7-b2 64.7-b 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z$ $-4$ $N(\mathrm{U}(1))$ $1$ $101.9768634$ 2.868323380 \( 1728 \) \( \bigl[a^{2} + a - 2\) , \( -a^{2} + 2\) , \( a^{2} - 3\) , \( -2 a^{2} + a + 9\) , \( -a^{2} + a + 5\bigr] \) ${y}^2+\left(a^{2}+a-2\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(-a^{2}+2\right){x}^{2}+\left(-2a^{2}+a+9\right){x}-a^{2}+a+5$
64.7-c1 64.7-c 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $28.28981181$ 0.795713124 \( 510768 a^{2} - 1452320 a + 597920 \) \( \bigl[a^{2} + a - 2\) , \( a^{2} - a - 2\) , \( a^{2} - 3\) , \( 3 a^{2} + a - 5\) , \( -2 a^{2} - 4 a\bigr] \) ${y}^2+\left(a^{2}+a-2\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(a^{2}-a-2\right){x}^{2}+\left(3a^{2}+a-5\right){x}-2a^{2}-4a$
64.7-c2 64.7-c 3.3.316.1 \( 2^{6} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $28.28981181$ 0.795713124 \( 342336 a^{2} + 460416 a - 292544 \) \( \bigl[a^{2} + a - 2\) , \( a - 1\) , \( a + 1\) , \( -71 a^{2} + 42 a + 312\) , \( 7259 a^{2} - 3836 a - 30834\bigr] \) ${y}^2+\left(a^{2}+a-2\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a-1\right){x}^{2}+\left(-71a^{2}+42a+312\right){x}+7259a^{2}-3836a-30834$
64.7-d1 64.7-d 3.3.316.1 \( 2^{6} \) $1$ $\Z/4\Z$ $\mathrm{SU}(2)$ $3.241056509$ $18.76465381$ 2.565930457 \( -\frac{10154621765056003}{2} a^{2} + 2687505089603077 a + 21574207961612782 \) \( \bigl[a^{2} - 3\) , \( a^{2} - a - 4\) , \( a^{2} - 3\) , \( 7908273 a^{2} - 4185996 a - 33603392\) , \( -17708327376 a^{2} + 9373311329 a + 75245171793\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(a^{2}-a-4\right){x}^{2}+\left(7908273a^{2}-4185996a-33603392\right){x}-17708327376a^{2}+9373311329a+75245171793$
64.7-d2 64.7-d 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1.620528254$ $37.52930762$ 2.565930457 \( \frac{8525185037}{4} a^{2} - \frac{12150636535}{2} a + \frac{5069473275}{2} \) \( \bigl[a^{2} - 3\) , \( a^{2} - a - 4\) , \( a^{2} - 3\) , \( 494268 a^{2} - 261626 a - 2100217\) , \( -276978244 a^{2} + 146609177 a + 1176919485\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(a^{2}-a-4\right){x}^{2}+\left(494268a^{2}-261626a-2100217\right){x}-276978244a^{2}+146609177a+1176919485$
64.7-d3 64.7-d 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.810264127$ $18.76465381$ 2.565930457 \( \frac{4108077233}{65536} a^{2} - \frac{5810733523}{32768} a + \frac{2294990397}{32768} \) \( \bigl[a^{2} - 3\) , \( a^{2} - a - 4\) , \( a + 1\) , \( -2894790049560 a^{2} + 1532260369223 a + 12300369748958\) , \( 6521086825648874308 a^{2} - 3451719377275691296 a - 27709014383527172467\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a^{2}-a-4\right){x}^{2}+\left(-2894790049560a^{2}+1532260369223a+12300369748958\right){x}+6521086825648874308a^{2}-3451719377275691296a-27709014383527172467$
64.7-d4 64.7-d 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $3.241056509$ $4.691163453$ 2.565930457 \( \frac{89069256294443128323}{2} a^{2} - 125302919348047971845 a + 49111676741552886754 \) \( \bigl[a^{2} - 3\) , \( a^{2} - 3\) , \( 0\) , \( 27 a^{2} + 42 a - 50\) , \( 3216 a^{2} + 4384 a - 2719\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}={x}^{3}+\left(a^{2}-3\right){x}^{2}+\left(27a^{2}+42a-50\right){x}+3216a^{2}+4384a-2719$
64.7-d5 64.7-d 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $0.810264127$ $75.05861525$ 2.565930457 \( \frac{200481}{16} a^{2} - \frac{325027}{8} a + \frac{233973}{8} \) \( \bigl[a^{2} - 3\) , \( -a^{2} + 3\) , \( 0\) , \( 2665494175 a^{2} - 1410890261 a - 11326059353\) , \( -101934795285681 a^{2} + 53955777236750 a + 433135270894324\bigr] \) ${y}^2+\left(a^{2}-3\right){x}{y}={x}^{3}+\left(-a^{2}+3\right){x}^{2}+\left(2665494175a^{2}-1410890261a-11326059353\right){x}-101934795285681a^{2}+53955777236750a+433135270894324$
64.7-d6 64.7-d 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $3.241056509$ $4.691163453$ 2.565930457 \( \frac{32251567931279}{16} a^{2} + \frac{21655756210331}{8} a - \frac{13765401110581}{8} \) \( \bigl[a + 1\) , \( a^{2} - 3\) , \( 0\) , \( 1698582370192 a^{2} - 899087811255 a - 7217515206531\) , \( 1762036591917483023 a^{2} - 932675182895637479 a - 7487141112384210938\bigr] \) ${y}^2+\left(a+1\right){x}{y}={x}^{3}+\left(a^{2}-3\right){x}^{2}+\left(1698582370192a^{2}-899087811255a-7217515206531\right){x}+1762036591917483023a^{2}-932675182895637479a-7487141112384210938$
64.7-d7 64.7-d 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1.620528254$ $37.52930762$ 2.565930457 \( \frac{130050481}{256} a^{2} + \frac{87514925}{128} a - \frac{54929731}{128} \) \( \bigl[a + 1\) , \( a^{2} - 3\) , \( 0\) , \( 111924466012 a^{2} - 59243475580 a - 475582785736\) , \( 24375985535984949 a^{2} - 12902613301177606 a - 103576988297813195\bigr] \) ${y}^2+\left(a+1\right){x}{y}={x}^{3}+\left(a^{2}-3\right){x}^{2}+\left(111924466012a^{2}-59243475580a-475582785736\right){x}+24375985535984949a^{2}-12902613301177606a-103576988297813195$
64.7-d8 64.7-d 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.405132063$ $37.52930762$ 2.565930457 \( \frac{427}{4} a^{2} + \frac{383}{2} a - \frac{47}{2} \) \( \bigl[a + 1\) , \( -a\) , \( a + 1\) , \( -1090739352869 a^{2} + 577346424071 a + 4634704800807\) , \( -3861853717631158558 a^{2} + 2044143202774369436 a + 16409559183912861757\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}-a{x}^{2}+\left(-1090739352869a^{2}+577346424071a+4634704800807\right){x}-3861853717631158558a^{2}+2044143202774369436a+16409559183912861757$
64.7-e1 64.7-e 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.051249936$ $265.0243926$ 1.146111581 \( 342336 a^{2} + 460416 a - 292544 \) \( \bigl[a^{2} + a - 2\) , \( a^{2} - a - 4\) , \( a^{2} - 3\) , \( -73 a^{2} + 41 a + 315\) , \( -7157 a^{2} + 3791 a + 30416\bigr] \) ${y}^2+\left(a^{2}+a-2\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+\left(a^{2}-a-4\right){x}^{2}+\left(-73a^{2}+41a+315\right){x}-7157a^{2}+3791a+30416$
64.7-e2 64.7-e 3.3.316.1 \( 2^{6} \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.025624968$ $265.0243926$ 1.146111581 \( 510768 a^{2} - 1452320 a + 597920 \) \( \bigl[a^{2} + a - 2\) , \( a\) , \( a^{2} - 3\) , \( 4 a^{2} + 3 a - 7\) , \( 4 a^{2} + 5 a - 4\bigr] \) ${y}^2+\left(a^{2}+a-2\right){x}{y}+\left(a^{2}-3\right){y}={x}^{3}+a{x}^{2}+\left(4a^{2}+3a-7\right){x}+4a^{2}+5a-4$
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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.