547716131821

This number is a prime.

                                                               54 7716131821

Just showing those entries submitted by 'Tryczak': (Click here to show all)

A prime which is both the sum of consecutive squares (523314² + 523315²), and also the difference of consecutive cubes (427285³ - 427284³). The next smallest prime of this form is 61. [Tryczak]