3、 2的80次幂是多少?
第一种计算方法:
2^80
=1024^8
=1048576^4
=1099511627776^2
=1208925819614629174706176
第二种计算方法:
=4^40
=16^20
=256^10
=65536^5
=4294967296×4294967296×65536
=18446744073709551616×65536