33092...37271 (34-digits)

This number is a prime.

                                       3309 2714056768 1273939711 9337937271

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

The largest prime growing in the center, two digits xy at a time, xy are two digits primes, 02 to 97, no repetition allowed. Found by Giovanni Resta. [Rivera]