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# 23005 · 2^{23005} - 1

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.

Description: | 23005 · 2^{23005} - 1 |
---|---|

Verification status (*): | Proven |

Official Comment (*): | Woodall |

Proof-code(s): (*): | Y : Young |

Decimal Digits: | 6930 (log_{10} is 6929.55687248748) |

Rank (*): | 81223 (digit rank is 1) |

Entrance Rank (*): | 595 |

Currently on list? (*): | short |

Submitted: | 5/1997 |

Last modified: | 5/1997 |

Database id: | 21572 |

Status Flags: | none |

Score (*): | 31.3025 (normalized score 0) |

#### 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.

- Woodall Primes (archivable *)
- Prime on list:
yes, rank12

Subcategory: "Woodall Primes"

(archival tag id 194745, tag last modified 2018-03-28 13:50:05)

#### 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 21572 person_id 9 machine RedHat P4 P4 what prime notes Command: /home/ditto/client/llr.pl 23005*2^23005-1 2>&1 Starting Lucas Lehmer Riesel prime test of 23005*2^23005-1 Using Irrational Base DWT : Mersenne fftlen = 1280, Used fftlen = 1792 V1 = 4 ; Computing U0... V1 = 4 ; Computing U0...done. Starting Lucas-Lehmer loop... 23005*2^23005-1 is prime! Time : 860.618 ms. [Elapsed time: 1.00 seconds] modified 2020-07-07 17:30:39 created 2008-05-25 22:07:19 id 99277

Query times: 0.0004 seconds to select prime, 0.0007 seconds to seek comments.

Printed from the PrimePages <primes.utm.edu> © Chris Caldwell.