if ethereum private key 0000000000000000000000000000000000000000000000000000000000000001 is number 1 in all ethereum private key sequence, what is the number of last private key FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141?
Ethereum uses de secp256k1 elliptic curve.
Defining an elliptic curve requires several parameters one of them is
G, a point in the elliptic curve,
n the order of G the elliptic curve. They are define such that
n is the smallest integer such that
n.G = O.