# 103040! - 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.

#### This prime's information:

Description: | 103040! - 1 |
---|---|

Verification status (*): | Proven |

Official Comment (*): | Factorial |

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

Proof-code(s): (*): | p301 : Winskill1, Fpsieve, PrimeGrid, OpenPFGW |

Decimal Digits: | 471794 (log_{10} is 471793.32496352) |

Rank (*): | 10979 (digit rank is 1) |

Entrance Rank (*): | 136 |

Currently on list? (*): | short |

Submitted: | 12/15/2010 03:31:36 UTC |

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

Database id: | 96944 |

Status Flags: | none |

Score (*): | 44.3267 (normalized score 0.4933) |

#### 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.

- Factorial primes (archivable *)
- Prime on list:
yes, rank8

Subcategory: "Factorial"

(archival tag id 213027, tag last modified 2023-03-11 15:53:59)

#### 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 96944 person_id 9 machine Ditto P4 P4 what trial_divided notes Command: /home/ditto/client/TrialDiv/TrialDiv -q 1 103040 ! -1 2>&1 [Elapsed time: 40571.083 seconds] modified 2020-07-07 22:30:32 created 2010-12-15 03:35:02 id 123278

field value prime_id 96944 person_id 9 machine Ditto P4 P4 what prime notes Command: /home/ditto/client/pfgw -tp -q"103040!-1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 103040!-1 [N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 103043, base 1+sqrt(103043) Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(196608,19) to FFT(196608,18) Reduced from FFT(196608,18) to FFT(196608,17) Reduced from FFT(196608,17) to FFT(196608,16) 3134544 bit request FFT size=(196608,16) Running N+1 test using discriminant 103043, base 2+sqrt(103043) Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(196608,19) to FFT(196608,18) Reduced from FFT(196608,18) to FFT(196608,17) Reduced from FFT(196608,17) to FFT(196608,16) 3134544 bit request FFT size=(196608,16) Calling Brillhart-Lehmer-Selfridge with factored part 33.98% 103040!-1 is prime! (328910.6907s+2.6303s) [Elapsed time: 3.81 days] modified 2020-07-07 22:30:32 created 2010-12-15 03:38:02 id 123279

Query times: 0.0003 seconds to select prime, 0.0005 seconds to seek comments.

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