3（2 的平方+1）（2的4次幂+1）（2的8次幂+1）（2的16次幂+1）+1
=(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)+1
=(2²-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)+1
=(2^4-1)(2^4+1)(2^8+1)(2^16+1)+1
=2^32
2^32的末位数=16^8的末位数=6^8的末位数=36^4的末位数=6^4的末位数=……=6