Working to 10 digits, both equal approximately 5.0760252191 × 10^23,974,381,246,463,762,439; you need twenty digits' precision to see that B is the greater one. Jlo's continued fractions approach shows how to obtain the exponents in A and B.
As to the second, taking logarithms, and then taking logarithms again, shows that D is bigger.
Comments: (
You must be logged in to post comments.)