热度 1
???????????142857
???????????**142857*
??????????????????
?????**1**??**6**??
142857 X 1 = 142857
142857 X 2 = 285714
142857 X 3 = 428571
142857 X 4 = 571428
142857 X 5 = 714285
142857 X 6 = 857142**
????????????????????
??????**7**??????????????**999999**
*?*142 + 857 = 999
14 + 28 + 57 = 99
??????** 142857 **??**142857**
????**20408122449 **???**???**?**?????????
20408 + 122449 = 142857
??????????
142857??????????????????????????
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