Monday, December 22, 2014

1853

1853= 17 x 109.

1853 is a semiprime divisible by the sum of its digits (A118693).

1853 is the sum of two positive cubes and divisible by 17 (A099178).

 1853 is a number n such that the strings n9n and 9n9 are both primes (A090265).

1853 has two representations as a sum of two squares: 1853 = 22 + 432 = 222 + 372.

1853 is the hypotenuse of two primitive Pythagorean triples: 18532 = 1722 + 18452 = 8852 + 16282.

1853 divides 334 - 1.


Source: OEIS



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