137153163127255511

This number is a prime.

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

137153163127255511 is prime. Note that 1 = 2¹ - 1, 3 = 2² - 1, 7 = 2³ - 1, ... , 511 = 2⁹ - 1. [Luhn]