11576...21111 (100-digits)

This number is a prime.

1157688286 0704151325 4808305363
6817796488 7705174882 2488996153 1340177081 9802814995 1685814839 6728321111

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The largest prime less than a googol with the form (2^n)*(10^6) + (2^n)*(10^5) + (2^n)*(10^4) + 1111, case n=309. [Barnes]

Submitted: 2020-02-23 18:34:54; Last Modified: 2020-02-23 21:33:42.