809
This number is a prime.
Just showing those entries submitted by 'Loungrides': (Click here to show all)
The larger of only two 3-digit distinct-digit primes whose
the absolute difference between any two of its digits is a
non-prime number. The other is 109. [Loungrides]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell