70000...00007 (99-digits)

This number is a prime.

                                             700000000 0000000000 0000000000
0000000000 0000000000 8000000000 0000000000 0000000000 0000000000 0000000007

Just showing those entries submitted by 'Loungrides': (Click here to show all)

+ The largest palindromic prime less than a googol with exactly three nonzero digits. [Loungrides]

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