This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).
Single Curio View: (Seek other curios for this number)A titanic prime, 2^3319+4099245, that remains prime after each digit d is substituted with (10-d). [Rivera]
Submitted: 2020-06-14 19:03:15; Last Modified: 2020-06-14 19:06:14.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell