378727873
This number is a prime.
Just showing those entries submitted by 'Rivera': (Click here to show all)
378727873is a palindromic prime such that it is equal to p+R(p) for 126 distinct primes p. No larger prime than 378727873 has been found/reported with more than 126 sums like these. Found by J. K. Andersen. [Rivera]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell