We just completed a major update. Let us know if anything is not working.
This number is a prime.
191918080 8180919090 9090919081 8080819191
Single Curio View: (Seek other curios for this number)This palindromic Sophie Germain prime starts a Cunningham chain of three palindromic primes. [Dubner]
Submitted: 1999-09-02 18:40:00; Last Modified: 2008-07-07 11:17:31.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell