33550337

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

+ The third known prime number of the form (2^(p-1)*(2^p)-1)+ 1, where 2^p-1 is a Mersenne prime. Such numbers are called right perfect primes. The first and second ones are 7 and 29. [Rivera]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell