This number is a prime.
Single Curio View: (Seek other curios for this number)The only emirp among the subscripts p of all known repunit primes Rp = (10p -1)/9, as of August 2009. [Beedassy]
Submitted: 2009-09-16 06:07:59; Last Modified: 2014-07-20 22:48:28.
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