答:
5^16 -1
=(5^8-1)(5^8+1)
=(5^4-1)(5^4+1)(5^8+1)
=(5^2-1)(5^2+1)(5^4+1)(5^8+1)
=24×26×(5^4+1)(5^8+1)
所以:这两个整数时24和26