7^2008=(7^1004)^2
13^100=(13^50)^2
9^2k=(9^k)^2
81^111=(9^111)^2
121^33=(11^33)^2
5^10=(5^5)^2
5^100*7^50=(5^50)^2*(7^25)^2
9^11*10^12=(3^11)^2*(10^6)^2
2^2k*3^4m*25^m=(2^2k)^2*(3^2m)^2*(5^m)^2
49^n*5^2n*121^m=(7^n)^2*(5^n)^2*(11^n)^2
36^m*11^2n*13^4m=(6^m)^2*(11^n)^2*(13^2m)^2
unde ^ inseamna la putere iar * inseamna inmultit
