These equal to 525, im pretty sure there are no other equations....
(1, 525)
(3, 175)
(5, 105)
(7, 75)
(15, 35)
(21, 25)
the answer is 64,023,737,057,280,000.
24
1358954496
512
If you're on a computer that allows you to ask this question and see the answer, it undoubtedly has a calculator program (in Windows, it's calc.exe). So you can answer this for yourself.
8 times 8 times 8 times 8 times 8 times 8, or 86 is 262,144
4
1 times 1 times 1225
One, and it is STILL the loneliest number...
355687428096000....Literrally there is a button on any good calculator for this it is shown as x! in this case 17! is the above number.
4 times 4 times 4 times 4 times 4 times 4 times 4 times 4 equals 65,536.
16,777,216