28

This number is a composite.

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

+ The 28th Fibonacci number plus and minus 28 is prime, i.e., F(28)-28 and F(28)+28 are primes. [Opao]

+ The 28th Fibonacci number plus 2828 is prime. This is the largest such number less than a thousand. [Opao]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell