The database currently contains the complete Cremona database. This contains all 3,064,705 elliptic curves defined over $\Q$ with conductor at most 500,000. Here are some further statistics.

Browse elliptic curves over $\Q$

By rank: 0 1 2 3 4

A random elliptic curve from the database

Find a specific curve or isogeny class by coefficients, LMFDB label, or Cremona label

e.g. 11.a2 or 389.a or 11a1 or 389a or [0,1,1,-2,0] or [-3024, 46224]