The Repunit Primes Project

Repunit:

Known REPUNIT Primes

Repunit Prime
Digits
When
Who
R(2) is prime!
2
-
-
R(19) is prime!
19
-
-
R(23) is prime!
23
-
-
R(317) is prime!
317
-
-
R(1031) is prime!
1031
-
-
R(49081) is PRP!
49081
Sep 1999
Harvey Dubner
R(86453) is PRP!
86453
Oct 2000
Lew Baxter
R(109297) is PRP!
109297
Apr 2007
Paul Bourdelais - Harvey Dubner
R(270343) is PRP!
270343
Jul 2007
Maksym Voznyy - Anton Budnyy

 
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    The Repunit Primes Project - 2011 - Website maintained by Giovanni Di Maria - email: calimero22@yahoo.it
Since Dec 23th, 2010 - Last updated on Jul 29, 2011


 

 

 

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