15772...48711 (178-digits)

This number is a prime.

                                   15772837 0594925431 7357213014 4338799397
3587692665 0888888144 4826001811 8962267656 8252911407 8607640990 5722823470
7758276963 3549045159 2019780473 4678270581 2587228221 6485184420 5868348711

The largest known (July 2003) prime 7-tuplet starts with this prime: 94552004441*410# + 165701 {+ 0, 2, 6, 8, 12, 18, 20}. [Andersen]