23353...31549 (2083-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

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

As of December, 2020, the largest known "Fletcher prime." Each composite in the concatenation of the ordered primes and composites is represented by a single digit; in this case the digit 3. [Sariyar]