U(148091)

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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:	U(148091)
Verification status (*):	PRP
Official Comment (*):	Fibonacci number, ECPP
Proof-code(s): (*):	x49 : Facq, Asuncion, Allombert, Unknown
Decimal Digits:	30949 (log₁₀ is 30948.839147257)
Rank (*):	68763 (digit rank is 1)
Entrance Rank (*):	63041
Currently on list? (*):	yes
Submitted:	9/18/2021 14:11:03 UTC
Last modified:	5/20/2023 20:59:19 UTC
Database id:	132721
Status Flags:	Verify
Score (*):	35.9359 (normalized score 0.0001)

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.

Elliptic Curve Primality Proof (archivable *)
Prime on list: no, rank 34
Subcategory: "ECPP"
(archival tag id 226300, tag last modified 2024-10-27 10:37:10)
Fibonacci Number (archivable *)
Prime on list: yes, rank 2
Subcategory: "Fibonacci Number"
(archival tag id 226301, tag last modified 2023-09-15 17:37:10)

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 132721

person_id 9

machine Using: Xeon (pool) 4c+4c 3.5GHz

what prp

notes Command: /home/caldwell/clientpool/1/pfgw64 -tc -q"U(148091)" 2>&1 PFGW Version 4.0.1.64BIT.20191203.x86_Dev [GWNUM 29.8] Primality testing U(148091) [N-1/N+1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N+1 test using discriminant 7, base 1+sqrt(7) Calling N-1 BLS with factored part 0.54% and helper 0.23% (1.87% proof) U(148091) is Fermat and Lucas PRP! (86.8884s+0.0013s) [Elapsed time: 87.00 seconds]

modified 2022-07-11 18:21:46

created 2021-09-18 14:16:01

id 178434

field	value
prime_id	132721
person_id	9
machine	Using: Xeon (pool) 4c+4c 3.5GHz
what	prp
notes	Command: /home/caldwell/clientpool/1/pfgw64 -tc -q"U(148091)" 2>&1 PFGW Version 4.0.1.64BIT.20191203.x86_Dev [GWNUM 29.8] Primality testing U(148091) [N-1/N+1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N+1 test using discriminant 7, base 1+sqrt(7) Calling N-1 BLS with factored part 0.54% and helper 0.23% (1.87% proof) U(148091) is Fermat and Lucas PRP! (86.8884s+0.0013s) [Elapsed time: 87.00 seconds]
modified	2022-07-11 18:21:46
created	2021-09-18 14:16:01
id	178434

Query times: 0.0002 seconds to select prime, 0.0004 seconds to seek comments.