666

This number is a composite.

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10^2300-167 is the largest prime of 2300 digits and 10^2300+499 the smallest prime of 2301 digits. A beastly gap thus originates (167+499=666) for the first time around some 10^k axis. Note that 167 and 499 are prime as well as the following combinations 2300167, 2301499 and last but not least 102300167. [De Geest]

Submitted: 2004-11-13 20:38:53; Last Modified: 2008-01-30 17:28:00.