227
This number is a prime.
Just showing those entries submitted by 'Gaydos': (Click here to show all)
227 is the Collatz trajectory length of 227227227. [Gaydos]
The nth Yarborough number equals 2*n only for n = 1, 13,
199, and 227. These are primes except 1 which is at least
not composite. [Gaydos]
(There are 2 curios for this number that have not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean