77777...73553 (100-digits)
This number is a prime.
7777777777 7777777777 7777777777
7777777777 7777777777 7777777777 7777777777 7777777777 7777777777 7777573553
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The largest prime less than a googol and consisting only of prime digits. [Gupta]
Submitted: 2004-01-04 02:06:47; Last Modified: 2008-01-30 17:28:00.
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