got it!
by yjjr @ 2017-12-25 20:50:08
@[antiquality](/space/show?uid=18351)
`如果一个数的所有连续三位数字都是大于100的素数，则该数称为三素数数。`
02,03,05,07<=100
by FlierKing @ 2017-12-25 23:38:45
@[antiquality](/user/18351)
如果倒数第二位有0那么前面必然有以0结尾的三位数，显然不是素数
by Avakos @ 2022-12-18 10:46:53
~~考古~~
by Avakos @ 2022-12-18 10:47:09