Wednesday, January 27, 2010

3563

3563 = 7 x 509.

3563 is a semiprime (product of two primes) such that 509 mod 7 = 5.

3563 is a term in the sequence created by starting with 1, then repeatedly reversing the digits and adding 76 to get the next term.

NGC 3563 is a galaxy in the constellation Leo.

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