This number is a prime.
The smallest prime formed by concatenating two consecutive Lychrel numbers, i.e., 790, 879. Note that the sum and the difference of these Lychrel numbers are also primes, i.e., 790+879 = 1669 and 879-790 = 89. [Loungrides]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell