# 170

This number is a composite.

170 is the smallest number that can be written as the sum of the squares of 2 distinct primes, where each of these primes is the square of a prime added to another prime (170 = (2^{2} + 3)^{2} + (3^{2} + 2)^{2}). [Thoms]

The start of a record-breaking run of consecutive integers (170-176) with an odd number of prime factors. [Honaker]

(There is one curio for this number that has not yet been approved by an editor.)

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell