Use a scientific calculator and 521 = 4.768371582*1014
5 to the 21st power
476837158203125.
52 = 25
autumn starts September 21st and winterm starts dec 21st you figure it out
5 to the fifth power simply means five multiplied by itself 5 times (5 x 5 x 5 x 5 x 5).
5 to the fourth power means 5 X 5 X 5 X 5. 5 X 5 = 25 5 X 25 = 125 and finally 5 X 125 = 625.
0.000976562
1021= 1,000,000,000,000,000,000,000
2^21=2,097,152
Figure it out yourself, cheater!
10 to the 21st power is called one sextillion.
72 or 49