9431

This number is a prime.

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

+ The largest 4-digit distinct-digit prime whose sum of the repdigit numbers of its digits, self-repeated, is an emirp, i.e., 999999999+333+4444+1 = 1000004777. [Loungrides]

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