Monday, September 29, 2014

4459

4459 = 7 x 7 x 7 x 13.

4459 divides 1812 - 1.

4459 is a number having exactly four representations by the quadratic form x2 + xy + y2 with 0 less than or equal to x less than or equal to y (A198775).

4459 is the number of Ramanujan primes less than 100,000 (A181671).


Source: OEIS

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