61

This number is a prime.

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The smallest prime that can be written as the sum of a prime number of primes to prime powers in a prime number of ways: 2² + 2³ + 7², 2² + 5² + 2⁵, and 3² + 5² + 3³. [Hartley]

Submitted: 2002-12-26 06:57:00; Last Modified: 2009-01-19 00:06:46.