19

This number is a prime.

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Farideh Firoozbakht improved the Papadimitriou's conjecture and proposed that every prime number p greater than or equal to 19 can be written as p = 2q + 3r, where q and r are odd primes. [Capelle]

Submitted: 2006-09-24 18:36:54;   Last Modified: 2008-01-30 17:28:00.
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