Răspuns:
a) u(2^51) = 8
2^1 = 2
2^2 = 4
2^3 = 8
2^4 = 16
_______
2^5 = 32
51 : 4 = 12 rest 3
b) u(3^73) = 3
3^1 = 3
3^2 = 9
3^3 = 27
3^4 = 81
3^5 = 243
73 : 4 = 18 rest 1
c) u(4^101) = 4
4^1 = 4
4^2 = 16
________
4^3 = 64
101 : 2 = 50 rest 1
d) u(127^59) = 3
127^1 = 127
127^2 = 16129
127^3 = 2048383
127^4 =.............1
_____________
127^5 =............. 7
59 : 4 = 14 rest 3
