Cremona's table of elliptic curves

26505 = 3² · 5 · 19 · 31

Class	r	Atkin-Lehner	Eigenvalues
26505a (2 curves)	1	3+ 5+ 19- 31-	0 3+ 5+ -4 -3 -4 -6 19-
Curve Equation t Generators 26505a1 [0,0,1,-618,5928] 3 [34:461:8] 26505a2 [0,0,1,1242,30449] 1 [21:-257:1]
26505b (2 curves)	0	3+ 5- 19- 31-	0 3+ 5- -4  3 -4  6 19-
Curve Equation t 26505b1 [0,0,1,138,-1128] 3 26505b2 [0,0,1,-5562,-160063] 1
26505c (4 curves)	1	3- 5+ 19+ 31-	1 3- 5+  4  4  2 -2 19+
Curve Equation t Generators 26505c1 [1,-1,0,6255,197680] 2 [7278:216647:8] 26505c2 [1,-1,0,-36990,1918831] 4 [-42910:-712333:343] 26505c3 [1,-1,0,-225315,-39625664] 2 [-27841085300:-108375921431:107850176] 26505c4 [1,-1,0,-540585,153098050] 2 [-490:17570:1]
26505d (4 curves)	1	3- 5+ 19+ 31-	-1 3- 5+  4  4 -6 -2 19+
Curve Equation t Generators 26505d1 [1,-1,1,4585207,-1195323384] 2 [6148094911546698418:392607978685935027231:2459336321198141] 26505d2 [1,-1,1,-19329638,-9785535708] 4 [5267138800:518455876548:456533] 26505d3 [1,-1,1,-176957663,898845451602] 2 [313366603057585:-23155853297594403:23124766049] 26505d4 [1,-1,1,-244339133,-1468477089894] 2 [15748124:3137563815:343]
26505e (4 curves)	1	3- 5+ 19+ 31-	-1 3- 5+ -4  0 -2 -2 19+
Curve Equation t Generators 26505e1 [1,-1,1,-4973,136212] 2 [42:-10:1] 26505e2 [1,-1,1,-5018,133656] 4 [-10:432:1] 26505e3 [1,-1,1,1957,471246] 2 [21:711:1] 26505e4 [1,-1,1,-12713,-368058] 2 [-70:453:1]
26505f (4 curves)	1	3- 5+ 19- 31+	1 3- 5+  0  0  2 -2 19-
Curve Equation t Generators 26505f1 [1,-1,0,225,-39200] 2 [294:917:8] 26505f2 [1,-1,0,-16020,-757229] 4 [5766:149269:8] 26505f3 [1,-1,0,-37395,1709446] 2 [38:566:1] 26505f4 [1,-1,0,-254565,-49372700] 2 [-897989070160:434268099455:3086626816]
26505g (2 curves)	1	3- 5- 19+ 31+	1 3- 5-  2 -4  2  2 19+
Curve Equation t Generators 26505g1 [1,-1,0,-144,-365] 2 [-6:19:1] 26505g2 [1,-1,0,-999,12118] 2 [-18:164:1]
26505h (2 curves)	1	3- 5- 19+ 31+	1 3- 5- -4  2 -6  2 19+
Curve Equation t Generators 26505h1 [1,-1,0,-1539,-34992] 2 [942:9015:8] 26505h2 [1,-1,0,-28044,-1800225] 2 [1550:75:8]
26505i (1 curve)	1	3- 5- 19+ 31+	-2 3- 5-  2 -1  6 -4 19+
Curve Equation t Generators 26505i1 [0,0,1,-1047,13392] 1 [32:-113:1]
26505j (2 curves)	0	3- 5- 19+ 31-	1 3- 5-  4  2  6  2 19+
Curve Equation t 26505j1 [1,-1,0,-242379,-403723472] 2 26505j2 [1,-1,0,-9810684,-11757474185] 2
26505k (2 curves)	2	3- 5- 19+ 31-	-1 3- 5-  0 -6 -4  2 19+
Curve Equation t Generators 26505k1 [1,-1,1,88,586] 2 [-4:14:1]&[-2:187:8] 26505k2 [1,-1,1,-767,7084] 2 [-28:91:1]&[-26:107:1]
26505l (2 curves)	0	3- 5- 19- 31+	1 3- 5-  2 -2  4 -2 19-
Curve Equation t 26505l1 [1,-1,0,-54774,4948695] 2 26505l2 [1,-1,0,-876429,316027278] 2
26505m (2 curves)	0	3- 5- 19- 31+	1 3- 5- -4 -2  4 -2 19-
Curve Equation t 26505m1 [1,-1,0,-954,-32697] 2 26505m2 [1,-1,0,-22329,-1276722] 2
26505n (2 curves)	1	3- 5- 19- 31-	-1 3- 5-  2 -4  6 -6 19-
Curve Equation t Generators 26505n1 [1,-1,1,-176612,28611974] 2 [252:121:1] 26505n2 [1,-1,1,-177467,28321616] 2 [96:3439:1]

Data from Elliptic Curve Data by J. E. Cremona.
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