P 384

P-384 is the elliptic curve currently specified in NSA Suite B Cryptography for the ECDSA and ECDH algorithms. It is a 384 bit curve with characteristic approximately 394 ⋅ 10 113 . In binary, this mod is given by 111...1100...0011...11. That is, 288 1s followed by 64 0s followed by 32 1s. The curve is given by the equation y 2 = x 3 − 3 x + b where b is given by a certain 384 bit number.