38729
This number is a prime.
The first five digits in the decimal expansion of the square root of fifteen (38729) form a prime. [Haga]
The total number of intersections formed when all possible
distinct circles are drawn on a 5-by-5 square grid of points
using only a compass. [Gudipati]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean