486894913
This number is a prime.
 
Insert a 3 anywhere to form 3*3 other primes.  [Blanchette]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean
This number is a prime.
 
Insert a 3 anywhere to form 3*3 other primes.  [Blanchette]