98989...98989 (161-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

                                                     9 8989898989 8989898989
8989898989 8989898989 8989898989 8989898989 8989898989 8989898989 8989898989
8989898989 8989898989 8989898989 8989898989 8989898989 8989898989 8989898989

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

The second largest prime number of the form (98*10^n-89)/99. [Heleen]