m t=m^2+m-1 m^2-m-1 m^3+m^2-m m^3-m^2-m t=m^2+m-1 m^2-m-1 m^3+m^2-m m^3-m^2-m
2 5 1 10 2 5 is prime 2*5 2 is prime
3 11 5 33 15 11 is prime 5 is prime 3*11 3*5
4 19 11 76 44 19 is prime 11 is prime 2*2*19 2*2*11
5 29 19 145 95 29 is prime 19 is prime 5*29 5*19
6 41 29 246 174 41 is prime 29 is prime 2*3*41 2*3*29
7 55 41 385 287 5*11 41 is prime 5*7*11 7*41
8 71 55 568 440 71 is prime 5*11 2*2*2*71 2*2*2*5*11
9 89 71 801 639 89 is prime 71 is prime 3*3*89 3*3*71
10 109 89 1090 890 109 is prime 89 is prime 2*5*109 2*5*89
11 131 109 1441 1199 131 is prime 109 is prime 11*131 11*109
12 155 131 1860 1572 5*31 131 is prime 2*2*3*5*31 2*2*3*131
13 181 155 2353 2015 181 is prime 5*31 13*181 5*13*31
14 209 181 2926 2534 11*19 181 is prime 2*7*11*19 2*7*181
15 239 209 3585 3135 239 is prime 11*19 3*5*239 3*5*11*19
16 271 239 4336 3824 271 is prime 239 is prime 2*2*2*2*271 2*2*2*2*239
17 305 271 5185 4607 5*61 271 is prime 5*17*61 17*271
18 341 305 6138 5490 11*31 5*61 2*3*3*11*31 2*3*3*5*61
19 379 341 7201 6479 379 is prime 11*31 19*379 11*19*31
20 419 379 8380 7580 419 is prime 379 is prime 2*2*5*419 2*2*5*379
……
995 991019 989029 986063905 984083855 619*1601 989029 is prime 5*199*619*1601 5*199*989029
996 993011 991019 989038956 987054924 993011 is prime 619*1601 2*2*3*83*993011 2*2*3*83*619*1601
997 995005 993011 992019985 990031967 5*11*79*229 993011 is prime 5*11*79*229*997 997*993011
998 997001 995005 995006998 993014990 997001 is prime 5*11*79*229 2*499*997001 2*5*11*79*229*499
999 998999 997001 998000001 996003999 179*5581 997001 is prime 3*3*3*37*179*5581 3*3*3*37*997001
1000 1000999 998999 1000999000 998999000 1000999 is prime 179*5581 2*2*2*5*5*5*1000999 2*2*2*5*5*5*179*5581
合数 687 687 999 998
素数 312 311 0 1
备注 —— 另一个是1 无素数 仅一个素数2