1996=2*2*499 1-1000的质数表2.3.5.7.11.13.17.19.23.29.31.37.41.43.47.53.59.61.67.71.73.79.83.89.97.101.103.107.109.113.131.137.139.147.149.151.157.163.167.173.179.181.191.193.197.199.211.223.227.229.23...