Proof-code: A85

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Samuel Yates began, and this site continues, a database of the largest known primes. Primes in that database are assigned a proof-code to show who should be credited with the discovery as well as what programs and projects they used. (Discoverers have one prover-entry, but may have many proof-codes because they use a variety of programs...)

This page provides data on A85, one of those codes.

Code name (*): A85

Persons (*): 1 (counting humans only)

Projects (*): 1 (counting projects only)

Display (HTML): Coscia, PFCSieve, PrimeGrid, PRST

Number of primes: total 1

Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess'

Score for Primes (*): total 50.6974, on current list 50.6974 (normalized score 126)

Entrance Rank (*): mean 109.00 (minimum 109, maximum 109)

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Below is additional information about this entry.

Display (text): Coscia, PFCSieve, PrimeGrid, PRST

Display (short): Coscia

Database id: 10617 (do not use this database id, it is subject to change)

Proof program: PRST The primes from this code accounts for 0.279% of the (active) primes and 0.927% of the (active) score for this program.

Entry last modified: 2026-01-26 09:37:24

Code name (*):	A85
Persons (*):	1 (counting humans only)
Projects (*):	1 (counting projects only)
Display (HTML):	Coscia, PFCSieve, PrimeGrid, PRST
Number of primes:	total 1
Unverified Primes:	0 (prime table entries marked 'Composite','Untested', or 'InProcess'
Score for Primes (*):	total 50.6974, on current list 50.6974 (normalized score 126)
Entrance Rank (*):	mean 109.00 (minimum 109, maximum 109)

Display (text):	Coscia, PFCSieve, PrimeGrid, PRST
Display (short):	Coscia
Database id:	10617 (do not use this database id, it is subject to change)
Proof program:	PRST The primes from this code accounts for 0.279% of the (active) primes and 0.927% of the (active) score for this program.
Entry last modified:	2026-01-26 09:37:24