This number is a prime.

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181 is the smallest odd prime (and fifth in all) exponent of 2 dissecting the interval between successive primes, i.e., 2^181 ± 165 are both prime with no intervening primes. [King]

Submitted: 2003-08-17 12:24:35;   Last Modified: 2008-01-30 11:28:00.
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