191128877173556587

This number is a prime.

                                                         19112887 7173556587

191128877173556587 is the smallest prime P such that P + 2^14 + 2^13 + 2^12 + 2^11 + 2^10 + 2^9 + 2^8 + 2^7 + 2^6 + 2^5 + 2^4 + 2^3 + 2^2 + 2^1 remains prime after removing consecutive terms from the right. Found by J. K. Andersen. (Puzzle created by Terry Trotter.) [Rivera]