Tuesday, April 1, 2014

3009

3009 = 3 x 17 x 59.

3009 is a number with prime factors a, b, and c such that a + b + c, a2 + b2 + c2, and a3 + b3 + c3 are all primes (A176911).

3009 divides 5816 - 1.

3009 is a member of the crystal ball sequence for hexagonal close-packing (A007202).


Source: OEIS

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