N = 1331
[C1] non-units [C2] #non-units lead to same
#solution for discriminant
[C3] #solution for discriminant
= non-units in C1
847, 242, 1210, 968, 726 5 3872
0 1 2541
781, 220, 616, 264, 1056, 913, 770, 836, 1089, 33, 682, 1166, 880, 352, 1254, 429, 209, 1111, 1100, 1067, 1265, 297, 704, 132, 748, 363, 231, 1298, 990, 946, 55, 1122, 308, 825, 869, 1221, 154, 187, 165, 1232, 110, 1177, 484, 440, 44, 1078, 11, 528, 1012, 77, 1144, 594, 330, 924, 671, 1309, 176, 1243, 143, 451, 462, 539, 22, 858, 275, 506, 1023, 374, 814, 638, 1155, 88, 759, 1287, 561, 957, 649, 1034, 935, 385, 495, 341, 660, 902, 99, 737, 792, 891, 715, 803, 1045, 1001, 121, 1188, 473, 1133, 66, 550, 979, 418, 583, 253, 1320, 627, 693, 1276, 407, 1199, 396, 319, 198, 517, 605, 286, 572 115 1210
C2TC3 = #ways delta can be non-unit 161051
Total non-singular EC over Z1331 = 13312 - #ways delta can be non-unit (C2TC3) = 1610510