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The Repunit Primes Project


Repunit:

Known REPUNIT Primes

Repunit Prime
Certificate 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!

1,031
Dec 1985
WD
R(49081) is prime!
2022 Link
49,081
Sep 1999
Harvey Dubner
R(86453) is prime!
2023 Link
86,453
Oct 2000
Lew Baxter
R(109297) is PRP!

109,297
Apr 2007
Paul Bourdelais - Harvey Dubner
R(270343) is PRP!

270,343
Jul 2007
Maksym Voznyy - Anton Budnyy
R(5794777) is PRP!
5,794,777
Apr 2021
Serge Batalov - Ryan Propper
R(8177207) is PRP!
8,177,207
May 2021 Serge Batalov - Ryan Propper

 

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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 May 12, 2021


 

 

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