from nx_crypto_ec.c:189
static NX_CRYPTO_CONST HN_UBASE _nx_crypto_ec_secp256r1_n[] =
{
HN_ULONG_TO_UBASE(0xFC632551), HN_ULONG_TO_UBASE(0xF3B9CAC2),
HN_ULONG_TO_UBASE(0xA7179E84), HN_ULONG_TO_UBASE(0xBCE6FAAD),
HN_ULONG_TO_UBASE(0xFFFFFFFF), HN_ULONG_TO_UBASE(0xFFFFFFFF),
HN_ULONG_TO_UBASE(0x00000000), HN_ULONG_TO_UBASE(0xFFFFFFFF)
};