# 10985674123

This number is a prime.

1 0985674123

It is conjectured that you can always arrange the numbers
from 1 to 2*n* in a circle so that every pair of
adjacent numbers adds to a prime. Antonio Filz called this circular permutation a Prime Circle. This prime gives one solution (starting with 10) when *n* = 5. [Caldwell]

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