25^25-25^24=25^23(25^2-25)=25^23(625-25)= 25^23*6*100
81^31-9^60=9^62-9^60=9^58(9^4-9^2)=9^58(6561-81)=9^58*6480
7^100+3x7^99=7^97(7^3+3*7^2)=7^97(343+147)=7^97*490
37^60+63x37^59=37^59(37+63*1)=37^59*100
25^25-25^24=25^23(25^2-25)=25^23(625-25)= 25^23*6*100
81^31-9^60=9^62-9^60=9^58(9^4-9^2)=9^58(6561-81)=9^58*6480
7^100+3x7^99=7^97(7^3+3*7^2)=7^97(343+147)=7^97*490
37^60+63x37^59=37^59(37+63*1)=37^59*100