Phi(13285, - 10)

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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:	Phi(13285, - 10)
Verification status (*):	PRP
Official Comment (*):	Unique, ECPP
Proof-code(s): (*):	c47 : Chandler, Primo
Decimal Digits:	10625 (log₁₀ is 10624.041388342)
Rank (*):	82951 (digit rank is 2)
Entrance Rank (*):	61665
Currently on list? (*):	yes
Submitted:	12/23/2012 16:19:46 UTC
Last modified:	3/11/2023 15:54:10 UTC
Database id:	110467
Status Flags:	Verify
Score (*):	32.6277 (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.

Elliptic Curve Primality Proof (archivable *)
Prime on list: no, rank 309
Subcategory: "ECPP"
(archival tag id 214825, tag last modified 2024-10-27 10:37:10)
Unique (archivable *)
Prime on list: yes, rank 15
Subcategory: "Unique"
(archival tag id 214826, tag last modified 2023-05-15 15:37:15)

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 110467

person_id 9

machine RedHat P4 P4

what prp

notes Command: /home/caldwell/client/pfgw -t -q"Phi(13285,-10)" 2>&1 PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5] Primality testing Phi(13285,-10) [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 2 Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 0.42% Phi(13285,-10) is PRP! (23.7445s+0.0016s) [Elapsed time: 24.00 seconds]

modified 2020-07-07 22:30:23

created 2012-12-23 16:23:01

id 151210

field	value
prime_id	110467
person_id	9
machine	RedHat P4 P4
what	prp
notes	Command: /home/caldwell/client/pfgw -t -q"Phi(13285,-10)" 2>&1 PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5] Primality testing Phi(13285,-10) [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 2 Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 0.42% Phi(13285,-10) is PRP! (23.7445s+0.0016s) [Elapsed time: 24.00 seconds]
modified	2020-07-07 22:30:23
created	2012-12-23 16:23:01
id	151210

field value

prime_id 110467

person_id 9

machine Ditto P4 P4

what trial_divided

notes Command: /home/ditto/client/pfgw -o -f -q"Phi(13285,-10)" 2>&1 PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5] Phi(13285,-10) 1/1 mro=0 trial factoring to 3067638 Phi(13285,-10) has no small factor. [Elapsed time: 2.939 seconds]

modified 2020-07-07 22:30:23

created 2012-12-23 16:35:01

id 151211

field	value
prime_id	110467
person_id	9
machine	Ditto P4 P4
what	trial_divided
notes	Command: /home/ditto/client/pfgw -o -f -q"Phi(13285,-10)" 2>&1 PFGW Version 3.4.5.32BIT.20110215.x86_Dev [GWNUM 26.5] Phi(13285,-10) 1/1 mro=0 trial factoring to 3067638 Phi(13285,-10) has no small factor. [Elapsed time: 2.939 seconds]
modified	2020-07-07 22:30:23
created	2012-12-23 16:35:01
id	151211

Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.