(2+1)(2²+1)(2四次幂+1)^(2二n次幂+1)

问题描述:

(2+1)(2²+1)(2四次幂+1)^(2二n次幂+1)

(2+1)(2^2+1)=15=2^4-1
(2+1)(2^2+1)(2^4+1)=255=2^8-1
……………………………………
(2+1)(2²+1)(2四次幂+1)……(2二n次幂+1)=2的4n次幂-1