PHP 忒聊 綴豖 ヶ輛 gmp_prob_prime (PHP 4 = 4.0.4) Description If this function returns 0, a is definitely not prime. If it returns 1, then a is "probably" prime. If it returns 2, then a is surely prime. Reasonable values of reps vary from 5 to 10 (default being 10); a higher value lowers the probability for a non-prime to pass as a "probable" prime. The function uses Miller-Rabin's probabilistic test. 綴豖 れ萸 ヶ輛 gmp_powm 奻珨撰 gmp_random