from nx_crypto_ec.c:352
static NX_CRYPTO_CONST HN_UBASE _nx_crypto_ec_secp521r1_n[] =
{
HN_ULONG_TO_UBASE(0x91386409), HN_ULONG_TO_UBASE(0xBB6FB71E),
HN_ULONG_TO_UBASE(0x899C47AE), HN_ULONG_TO_UBASE(0x3BB5C9B8),
HN_ULONG_TO_UBASE(0xF709A5D0), HN_ULONG_TO_UBASE(0x7FCC0148),
HN_ULONG_TO_UBASE(0xBF2F966B), HN_ULONG_TO_UBASE(0x51868783),
HN_ULONG_TO_UBASE(0xFFFFFFFA), HN_ULONG_TO_UBASE(0xFFFFFFFF),
HN_ULONG_TO_UBASE(0xFFFFFFFF), HN_ULONG_TO_UBASE(0xFFFFFFFF),
HN_ULONG_TO_UBASE(0xFFFFFFFF), HN_ULONG_TO_UBASE(0xFFFFFFFF),
HN_ULONG_TO_UBASE(0xFFFFFFFF), HN_ULONG_TO_UBASE(0xFFFFFFFF),
HN_ULONG_TO_UBASE(0x000001FF)
};