70000...00007 (113-digits)

This number is a prime.

                             700 0000000000 0000000000 0000000000 0000000000
0000000000 0005000000 0000000000 0000000000 0000000000 0000000000 0000000007

+ The smallest "zerofull" prime greater than a googol. (A zerofull prime is a palindromic prime of the form p = a000...0b0...000a, whose digits are all zeros with the exception of three of them.) [Loungrides]

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