# (63847^{13339} - 1)/63846

At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important PrimePages database: a collection of research, records and results all about prime numbers. This page summarizes our information about one of these primes.

#### This prime's information:

Description: | (63847^{13339} - 1)/63846 |
---|---|

Verification status (*): | PRP |

Official Comment (*): | Generalized repunit |

Unofficial Comments: | This prime has 1 user comment below. |

Proof-code(s): (*): | p170 : Wu_T, Primo, OpenPFGW |

Decimal Digits: | 64091 (log_{10} is 64090.963938997) |

Rank (*): | 55015 (digit rank is 1) |

Entrance Rank (*): | 37621 |

Currently on list? (*): | short |

Submitted: | 5/11/2013 08:17:21 UTC |

Last modified: | 3/11/2023 15:54:10 UTC |

Database id: | 114111 |

Status Flags: | Verify |

Score (*): | 38.1829 (normalized score 0.0013) |

#### Archival tags:

There are certain forms classed as archivable: these prime may (at times) remain on this list even if they do not make the Top 5000 proper. Such primes are tracked with archival tags.

- Generalized Repunit (archivable *)
- Prime on list:
yes, rank9

Subcategory: "Generalized Repunit"

(archival tag id 217144, tag last modified 2023-11-18 19:37:18)

#### User comments about this prime (disclaimer):

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#### Verification data:

The Top 5000 Primes is a list for proven primes only. In order to maintain the integrity of this list, we seek to verify the primality of all submissions. We are currently unable to check all proofs (ECPP, KP, ...), but we will at least trial divide and PRP check every entry before it is included in the list.

field value prime_id 114111 person_id 9 machine RedHat P4 P4 what trial_divided notes Command: /home/caldwell/client/pfgw -o -f -q"(63847^13339-1)/63846" 2>&1 PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5] (63847^13339-1)/63846 1/1 mro=0 trial factoring to 21184399 (63847^13339-1)/63846 has no small factor. [Elapsed time: 110.768 seconds] modified 2020-07-07 22:30:19 created 2013-05-11 08:18:12 id 158594

field value prime_id 114111 person_id 9 machine Ditto P4 P4 what prp notes Command: /home/ditto/client/pfgw -tc -q"(63847^13339-1)/63846" 2>&1 PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5] Primality testing (63847^13339-1)/63846 [N-1/N+1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N+1 test using discriminant 11, base 1+sqrt(11) Calling N-1 BLS with factored part 0.22% and helper 0.01% (0.67% proof) (63847^13339-1)/63846 is Fermat and Lucas PRP! (2040.3194s+0.0077s) [Elapsed time: 34.00 minutes] modified 2020-07-07 22:30:19 created 2013-05-11 08:40:15 id 158598

Query times: 0.0002 seconds to select prime, 0.0003 seconds to seek comments.

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