33931...00001 (191-digits)

This number is a prime.

                    3 3931086844 5189820119 8256093588 5732032396 6355569942
0770196366 2088123265 3141763303 3625453597 1207181169 6988685849 9194160778
0111073928 2362611996 0469179757 0505851011 0720000000 0000000000 0000000001

+ 116! + 1 is prime. [Dobb]

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