17

This number is a prime.

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Prime Numbers CD Image J. Neptune © 1994

The longest word of prime length in the King James Version of the Bible (the "KJV Bible") is Chushanrishathaim with 17 letters. This was the king of Mesopotamia and the first oppressor of the Israelites after their settlement in Canaan. [Opao]

17 is the largest number less than a thousand such that the sum of its factorial and primorial plus and minus one are primes. I.e., 17!+17#-1 and 17!+17#+1 are primes. [Opao]