Number 1

222222222222

eerhT

4^4=256

5^5=3,125 3125^2=9,765,625 9765625^4=9.0949×10²⁷

6^6=46,656

7^7=823,543

8!=40,320

9!=362,880

10!=3,628,800

11!=39,916,800

12!=479,001,600

13!=6,227,020,800

14!=8.718×10^10