Last updated: 15 May 2023
Term: Rn = (10n - 1) / 9 Reference: PrimePages |
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Number | Digits | When | PRP found by ... | Status |
---|---|---|---|---|
R8177207 | 8177207 | May 2021 | Ryan Propper, Serge Batalov | PRP |
R5794777 | 5794777 | May 2021 | Ryan Propper, Serge Batalov | PRP |
R270343 | 270343 | Jul 2007 | Voznyy and Budnyy | PRP |
R109297 | 109297 | Apr 2007 | Bourdelais and Harvey Dubner | PRP |
R86453 | 86453 | Oct 2000 15 May 2023 |
Lew Baxter Andreas Enge (proven prime via CM) |
Prime |
R49081 | 49081 | Sep 1999 Mar 2022 |
Harvey Dubner (PRP) Paul Underwood (proven prime via Primo) |
Prime |
R1031 | 1031 | Dec 1985 | Harvey Dubner & Hugh C. Williams | Prime |
R317 | 317 | - | - | Prime |
R23 | 23 | - | - | Prime |
R19 | 19 | - | - | Prime |
R2 | 2 | - | - | Prime |