This number is a prime.
The smallest prime that can be represented as the sum of the numbers formed by repeating twice each of first n composite numbers, 4, 6, 8, 9, 10, (n=5), i.e., 1307 = 44 + 66 + 88 + 99 + 1010. [Loungrides]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell