12345...15253 (76-digits)

This number is a prime.

123457
8910111314 1516171921 2223252627 2931323334 3537383941 4344454647 4950515253

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The largest prime number less than a googol formed from concatenation of first n deficient numbers (case n=42). [Gupta]

Submitted: 2020-07-26 00:21:43; Last Modified: 2023-10-07 19:20:48.