This number is a prime.

Just showing those entries submitted by 'Loungrides': (Click here to show all)

+ The first of seven consecutive strobogrammatic primes such that the sum of any three consecutive is prime, i.e., 1180811, 1190611, 1191611, 1681891, 1690691, 1880881, 1881881. [Loungrides]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell