1758719

This number is a prime.

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

There are way too many formulae for π with arctan(1/m) terms, but π = 32*arctan(1/10) - 4*arctan( 1758719 / 147153121 ) with two primes 1758719 and 147153121 is a little different. (Submitted on 3/14) [Ellermann]