做字符串的时候上网搜的,实用性未知。
一千以下:
$ 61,83,113,151,211$
一万以下:
$ 1217,1627, 2179,2909,3881,6907,9209$
十万以下:
$12281,13331,16381,21841, 29123,38833,51787,69061, 92083$
百万以下:
$ 122777, 163729, 218357, 291143,388211,517619,690163,999983$
千万以下:
$1226959, 1635947, 2181271, 2908361, 3877817, 5170427, 6893911,9191891$
一亿以下:
$12255871, 16341163, 21788233, 29050993, 38734667, 51646229,68861641, 91815541$
十亿左右:
$1e9+7,1e9+9$
十亿以下:
$122420729,163227661,217636919,290182597,386910137,515880193,687840301,917120411$
十亿以上:
$1222827239,1610612741, 3221225473ul, 4294967291ul$