99999...10221 (55-digits)

This number is a prime.

                99999 9999988888 8888777777 7766666665 5555544444 3333110221

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

The largest prime that contains one of one digit, two of another digit, three of another digit, ..., and ten of another digit. [Resta and Vantieghem]