9871

This number is a prime.

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

The first case of two consecutive balanced primes that are both distinct-digit primes and emirps. [Loungrides]

The largest 4-digit distinct-digit emirp abcd such that abbcccdddd is also emirp, i.e., 9887771111. [Loungrides]