42013

This number is a prime.

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

The only prime less than a googol produced by the alternate placement of the positive numbers to the right and left of the zero, i.e., 0, 01, 201, 2013, 42013. [Loungrides]

The largest Cyclops prime that consists of first five digits. [Loungrides]