79945...99999 (98-digits)

This number is a prime.

                                              79945374 8486332246 2409949956
3911018209 8540828550 6991580303 4118294119 1282957400 9847807999 9999999999

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The product of first 59 even numbers (2 through 118) minus 1 is the largest prime less than a googol of this type. [Loungrides]