78005...25193 (9106-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 'Greathouse IV': (Click here to show all)

As of 2005, the largest known prime number of the form n^(n+1)+(n+1)^n, where here n=2658. [Greathouse IV]