499

This number is a prime.

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Separate 499 into two (49, 9) and three groups (4, 9, 9) and get two primes after replacing each subset with its square root, namely 73 and 233. Replacing each digit of these latter two primes with their cubes results also in two new primes 34327 and 82727. [De Geest]

Submitted: 2002-05-12 23:22:28; Last Modified: 2020-02-07 14:26:07.