Elliptic Curve Rank Leaderboard

← curve #897

Commentary history

1 edit.

• David Renshaw · 2026-09-23 14:57:09 UTC

  Cremona 21a5 = LMFDB 21.a1: https://www.lmfdb.org/EllipticCurve/Q/21/a/1 Mordell–Weil rank exactly 0 (Cremona's tables). Conductor 21, minimal discriminant 147, torsion ℤ/2ℤ.