# 1619

This number is a prime.

A prime whose cube can be expressed as the sum of three prime squares in two different ways, i.e., 1619^{3} is 3^{2} + 24967^{2} + 60169^{2} and 3^{2} + 28163^{2} + 58741^{2}. [Rivera]

Exactly half of the first 3238 positive integers (1619) contain no twos. [Gaydos]

1619 is the 256th prime. If you square the number formed from the first two digits in ascending order, namely 16, you get 256. [Missailidis]

(There are 2 curios for this number that have not yet been approved by an editor.)

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