Question

已知2的96次方-1可以被60至70之间的的两个整数整除,则这两个整数是多少?

Answer 1

2^96-1
=(2^48+1)(2^48-1)
=(2^48+1)(2^24+1)(2^12+1)(2^6+1)(2^6-1)
=(2^48+1)(2^24+1)(2^12+1)×65×63
所以两个数是65和63