10000...00153 (500-digits)

This number is a prime.

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10^499+153 is the smallest 500-digit prime. Note that the concatenations: 153499 is prime and 499153 is a brilliant number, i.e., 499153 = 617 x 809, with the concatenation in order of its prime factors, i.e., 617809, being a prime. [Loungrides]

Submitted: 2010-06-14 18:15:42; Last Modified: 2018-12-24 14:24:50.