2^60= 1152921504606846976 1152921504606846976 1.15292e+18 100000000000000000000
2^61= 2305843009213693952 2305843009213693952 2.30584e+18 200000000000000000000
2^62= 4611686018427387904 4611686018427387904 4.61169e+18 400000000000000000000
2^63= 9223372036854775808 9223372036854775808 9.22337e+18 1000000000000000000000