10000...33603 (10000-digits)

This number is a prime.

+ 10^9999 + 33603 is the smallest gigantic prime. It was verified in 2003 by Jens Franke, Thorsten Kleinjung, and Tobias Wirth with their distributed version of an ECPP program, which gave the largest ECPP proof at the time. [Luhn]

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