11110...11111 (241-digits)

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

                                          1 1110998888 7888900111 1100000000
0000111109 9888878889 0011222109 9888878890 1122110999 8887788901 1111109998
7889011222 2210987766 6779011222 2210988879 0001111110 9888778890 0011122109
8887888900 1122210998 8887888900 1111100000 0000000111 1099888878 8890011111

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

The only non-titanic beastly unique prime. [Marcel]