10717...34621 (33-digits)

This number is a prime.

                                        107 1737146024 1386877530 3366934621

The largest known prime 15-tuplet as of April 2008 is 107173714602413868775303366934621 + n, for n = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48, 50, 56. [Andersen]