17
This number is a prime.
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17 + 21, 17 + 21 + 22, 17 + 21 + 22 + 23, 17 + 21 + 22 + 23 + 24 and 17 + 21 + 22 + 23 + 24 + 25 are primes. [Luhn]
Submitted: 1999-09-02 23:40:00; Last Modified: 2008-01-30 17:28:00.
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