2 to the power of 4
16
2 X 3
6
3 to the power of 6
729
12 X 12
144
6 to the power of 4
1296
23 X 42
966
10 to the power of 9
1,000,000,000
120 X 21
2520
21 to the power of 4
194481
99 X 99
9801