19

This number is a prime.

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

+ 19 authors going back to Nicodemus are reported to have made the claim that the perfect numbers had units digits that invariably alternated between 6 and 8, until Pierrot Cataldi exploded the number-theoretical myth. [Dickson]

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