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:

2^80

=4^40

=16^20

=256^10

=65536^5

=4294967296×4294967296×65536

=18446744073709551616×65536

=1208925819614629174706176