Quote:
Originally Posted by axn
But keep also in mind that 10^1000000 has 1000001 digits, and 10^999999 has 1000000 digits.

Haha, I think it is the second time when you catch me with this...
Anyhow, it is irrelevant, because log(10,2) is 3.32192809488736 and when you multiply it with either 10M or 10M1, you get 33219280.xx and 33219277.xx, respectively, and there is no prime in between. The next prime candidate for the exponent is (as ET already said) 33219283 (which has 10M+2 digits, probably).