19579...10177 (73561-digits)

This number is a prime.

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

As of April 2004, (2^81454-2)^3+3^2 was the largest known prime of the form a^b+c^d with integers {a,b,c,d} all greater than unity and either b or d greater than 2. [Broadhurst]