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The results below are complete, since the LMFDB contains all elliptic curves with conductor norm at most 100000 over imaginary quadratic fields with absolute discriminant 4

Note: The completeness Only modular elliptic curves are included

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Results (32 matches)

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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
16640.2-a1 16640.2-a \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.961109633$ $1.373707389$ 2.640566811 \( \frac{3471825368}{142805} a - \frac{1326505996}{142805} \) \( \bigl[0\) , \( i + 1\) , \( 0\) , \( -38 i + 23\) , \( -11 i - 97\bigr] \) ${y}^2={x}^{3}+\left(i+1\right){x}^{2}+\left(-38i+23\right){x}-11i-97$
16640.2-a2 16640.2-a \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $0.480554816$ $2.747414779$ 2.640566811 \( \frac{745536}{4225} a - \frac{656752}{4225} \) \( \bigl[0\) , \( i + 1\) , \( 0\) , \( 2 i + 3\) , \( 5 i - 5\bigr] \) ${y}^2={x}^{3}+\left(i+1\right){x}^{2}+\left(2i+3\right){x}+5i-5$
16640.2-a3 16640.2-a \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.961109633$ $5.494829559$ 2.640566811 \( -\frac{733184}{65} a + \frac{247808}{65} \) \( \bigl[0\) , \( i + 1\) , \( 0\) , \( 2 i - 2\) , \( i - 2\bigr] \) ${y}^2={x}^{3}+\left(i+1\right){x}^{2}+\left(2i-2\right){x}+i-2$
16640.2-a4 16640.2-a \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.961109633$ $1.373707389$ 2.640566811 \( -\frac{2684992152}{8125} a + \frac{3183399164}{8125} \) \( \bigl[0\) , \( i + 1\) , \( 0\) , \( 42 i + 63\) , \( 197 i - 185\bigr] \) ${y}^2={x}^{3}+\left(i+1\right){x}^{2}+\left(42i+63\right){x}+197i-185$
16640.2-b1 16640.2-b \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $1.627380842$ 1.627380842 \( \frac{965386184}{65} a - \frac{555859168}{65} \) \( \bigl[0\) , \( i - 1\) , \( 0\) , \( 74 i + 43\) , \( -11 i - 347\bigr] \) ${y}^2={x}^{3}+\left(i-1\right){x}^{2}+\left(74i+43\right){x}-11i-347$
16640.2-b2 16640.2-b \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $3.254761685$ 1.627380842 \( -\frac{5112192}{8125} a + \frac{2058944}{8125} \) \( \bigl[0\) , \( i + 1\) , \( 0\) , \( 2 i + 3\) , \( 5 i + 1\bigr] \) ${y}^2={x}^{3}+\left(i+1\right){x}^{2}+\left(2i+3\right){x}+5i+1$
16640.2-b3 16640.2-b \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $3.254761685$ 1.627380842 \( \frac{14964096}{4225} a + \frac{11995328}{4225} \) \( \bigl[0\) , \( -i + 1\) , \( 0\) , \( 4 i + 3\) , \( i + 7\bigr] \) ${y}^2={x}^{3}+\left(-i+1\right){x}^{2}+\left(4i+3\right){x}+i+7$
16640.2-b4 16640.2-b \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $1.627380842$ 1.627380842 \( -\frac{1485988328}{142805} a + \frac{732787376}{142805} \) \( \bigl[0\) , \( -i + 1\) , \( 0\) , \( 14 i + 23\) , \( 35 i - 25\bigr] \) ${y}^2={x}^{3}+\left(-i+1\right){x}^{2}+\left(14i+23\right){x}+35i-25$
16640.2-c1 16640.2-c \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $2.608850978$ 1.304425489 \( \frac{29953152}{325} a - \frac{430726464}{325} \) \( \bigl[0\) , \( 0\) , \( 0\) , \( -24 i - 1\) , \( -34 i + 30\bigr] \) ${y}^2={x}^{3}+\left(-24i-1\right){x}-34i+30$
16640.2-c2 16640.2-c \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $1.304425489$ 1.304425489 \( \frac{19739179656}{714025} a - \frac{22120152192}{714025} \) \( \bigl[0\) , \( 0\) , \( 0\) , \( 36 i - 41\) , \( -138 i + 76\bigr] \) ${y}^2={x}^{3}+\left(36i-41\right){x}-138i+76$
16640.2-c3 16640.2-c \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $0.652212744$ 1.304425489 \( \frac{1364516578566}{4078653605} a + \frac{159212753118}{4078653605} \) \( \bigl[0\) , \( 0\) , \( 0\) , \( -24 i - 61\) , \( 446 i + 120\bigr] \) ${y}^2={x}^{3}+\left(-24i-61\right){x}+446i+120$
16640.2-c4 16640.2-c \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $2.608850978$ 1.304425489 \( -\frac{103856256}{105625} a + \frac{72038592}{105625} \) \( \bigl[0\) , \( 0\) , \( 0\) , \( 6 i - 1\) , \( -2 i - 6\bigr] \) ${y}^2={x}^{3}+\left(6i-1\right){x}-2i-6$
16640.2-c5 16640.2-c \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $1.304425489$ 1.304425489 \( \frac{10519172568}{5078125} a + \frac{9179052624}{5078125} \) \( \bigl[0\) , \( 0\) , \( 0\) , \( -24 i + 19\) , \( -30 i - 48\bigr] \) ${y}^2={x}^{3}+\left(-24i+19\right){x}-30i-48$
16640.2-c6 16640.2-c \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $0.652212744$ 1.304425489 \( -\frac{1482120806454}{845} a + \frac{204275951298}{845} \) \( \bigl[0\) , \( 0\) , \( 0\) , \( 576 i - 661\) , \( -8790 i + 4752\bigr] \) ${y}^2={x}^{3}+\left(576i-661\right){x}-8790i+4752$
16640.2-d1 16640.2-d \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $0.756107341$ 1.512214683 \( \frac{27981544028}{3173828125} a - \frac{4586040596}{3173828125} \) \( \bigl[0\) , \( -1\) , \( 0\) , \( -4 i - 14\) , \( -274 i - 132\bigr] \) ${y}^2={x}^{3}-{x}^{2}+\left(-4i-14\right){x}-274i-132$
16640.2-d2 16640.2-d \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $1.512214683$ 1.512214683 \( \frac{2019469952}{3570125} a + \frac{10326580736}{3570125} \) \( \bigl[0\) , \( -i\) , \( 0\) , \( 6 i - 23\) , \( 15 i - 26\bigr] \) ${y}^2={x}^{3}-i{x}^{2}+\left(6i-23\right){x}+15i-26$
16640.2-d3 16640.2-d \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z\oplus\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $1.512214683$ 1.512214683 \( -\frac{28385412384}{2640625} a + \frac{73700573888}{2640625} \) \( \bigl[0\) , \( -1\) , \( 0\) , \( -14 i + 36\) , \( -70 i - 60\bigr] \) ${y}^2={x}^{3}-{x}^{2}+\left(-14i+36\right){x}-70i-60$
16640.2-d4 16640.2-d \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $0.756107341$ 1.512214683 \( -\frac{949079039916}{1625} a + \frac{1010847968212}{1625} \) \( \bigl[0\) , \( -1\) , \( 0\) , \( -224 i + 566\) , \( -4802 i - 3284\bigr] \) ${y}^2={x}^{3}-{x}^{2}+\left(-224i+566\right){x}-4802i-3284$
16640.2-e1 16640.2-e \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.110721770$ $1.973835787$ 2.622559107 \( -\frac{36002688}{203125} a + \frac{281129216}{203125} \) \( \bigl[0\) , \( -1\) , \( 0\) , \( -10 i - 5\) , \( 6 i + 9\bigr] \) ${y}^2={x}^{3}-{x}^{2}+\left(-10i-5\right){x}+6i+9$
16640.2-e2 16640.2-e \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.221443540$ $1.973835787$ 2.622559107 \( \frac{3615331168}{21125} a + \frac{179191424}{21125} \) \( \bigl[0\) , \( -i\) , \( 0\) , \( 30 i + 6\) , \( 28 i + 68\bigr] \) ${y}^2={x}^{3}-i{x}^{2}+\left(30i+6\right){x}+28i+68$
16640.2-f1 16640.2-f \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.246010947$ $3.385308722$ 3.331292019 \( \frac{116352}{325} a + \frac{263936}{325} \) \( \bigl[0\) , \( i\) , \( 0\) , \( -2 i - 3\) , \( -3 i + 2\bigr] \) ${y}^2={x}^{3}+i{x}^{2}+\left(-2i-3\right){x}-3i+2$
16640.2-f2 16640.2-f \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.492021894$ $3.385308722$ 3.331292019 \( -\frac{916768}{845} a + \frac{2571776}{845} \) \( \bigl[0\) , \( 1\) , \( 0\) , \( -2 i - 4\) , \( -2 i - 4\bigr] \) ${y}^2={x}^{3}+{x}^{2}+\left(-2i-4\right){x}-2i-4$
16640.2-g1 16640.2-g \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $0.425218322$ 1.913482450 \( -\frac{157034896049234432}{330078125} a - \frac{128574568523373376}{330078125} \) \( \bigl[0\) , \( i\) , \( 0\) , \( 958 i - 1598\) , \( -22952 i + 21014\bigr] \) ${y}^2={x}^{3}+i{x}^{2}+\left(958i-1598\right){x}-22952i+21014$
16640.2-g2 16640.2-g \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $1.275654967$ 1.913482450 \( -\frac{2088753403392}{34328125} a - \frac{1627055822656}{34328125} \) \( \bigl[0\) , \( 1\) , \( 0\) , \( -62 i + 16\) , \( -102 i + 186\bigr] \) ${y}^2={x}^{3}+{x}^{2}+\left(-62i+16\right){x}-102i+186$
16640.2-g3 16640.2-g \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $3.826964901$ 1.913482450 \( \frac{732672}{325} a - \frac{3306304}{325} \) \( \bigl[0\) , \( 1\) , \( 0\) , \( -2 i - 4\) , \( 2 i + 2\bigr] \) ${y}^2={x}^{3}+{x}^{2}+\left(-2i-4\right){x}+2i+2$
16640.2-g4 16640.2-g \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $0.425218322$ 1.913482450 \( \frac{1110974116587520512}{49591064453125} a - \frac{489671365797093184}{49591064453125} \) \( \bigl[0\) , \( 1\) , \( 0\) , \( -242 i + 396\) , \( -2822 i - 2646\bigr] \) ${y}^2={x}^{3}+{x}^{2}+\left(-242i+396\right){x}-2822i-2646$
16640.2-g5 16640.2-g \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $3.826964901$ 1.913482450 \( -\frac{1183232}{845} a - \frac{851776}{845} \) \( \bigl[0\) , \( i\) , \( 0\) , \( -2 i + 2\) , \( -2\bigr] \) ${y}^2={x}^{3}+i{x}^{2}+\left(-2i+2\right){x}-2$
16640.2-g6 16640.2-g \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $1.275654967$ 1.913482450 \( \frac{356394317312}{603351125} a + \frac{580261889216}{603351125} \) \( \bigl[0\) , \( i\) , \( 0\) , \( 18 i - 18\) , \( -16 i + 38\bigr] \) ${y}^2={x}^{3}+i{x}^{2}+\left(18i-18\right){x}-16i+38$
16640.2-h1 16640.2-h \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.273985436$ $2.118431341$ 3.482516010 \( -\frac{620935008}{203125} a + \frac{437411456}{203125} \) \( \bigl[0\) , \( -i - 1\) , \( 0\) , \( -8 i + 9\) , \( -3 i - 21\bigr] \) ${y}^2={x}^{3}+\left(-i-1\right){x}^{2}+\left(-8i+9\right){x}-3i-21$
16640.2-h2 16640.2-h \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.136992718$ $2.118431341$ 3.482516010 \( \frac{279628672}{21125} a + \frac{79421696}{21125} \) \( \bigl[0\) , \( i - 1\) , \( 0\) , \( 4 i - 16\) , \( -16 i + 28\bigr] \) ${y}^2={x}^{3}+\left(i-1\right){x}^{2}+\left(4i-16\right){x}-16i+28$
16640.2-i1 16640.2-i \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $3.176319700$ 3.176319700 \( -\frac{3712}{845} a - \frac{256}{845} \) \( \bigl[0\) , \( -i - 1\) , \( 0\) , \( 0\) , \( -4 i\bigr] \) ${y}^2={x}^{3}+\left(-i-1\right){x}^{2}-4i$
16640.2-i2 16640.2-i \(\Q(\sqrt{-1}) \) \( 2^{8} \cdot 5 \cdot 13 \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $3.176319700$ 3.176319700 \( \frac{3009312}{325} a + \frac{10466816}{325} \) \( \bigl[0\) , \( i - 1\) , \( 0\) , \( -8 i + 5\) , \( 3 i - 9\bigr] \) ${y}^2={x}^{3}+\left(i-1\right){x}^{2}+\left(-8i+5\right){x}+3i-9$
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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.