Proof-code: A81

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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 A81, one of those codes.

Code name (*): A81

Persons (*): 1 (counting humans only)

Projects (*): 1 (counting projects only)

Display (HTML): Arnold1, Srsieve, CRUS, PRST

Number of primes: total 1

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

Score for Primes (*): total 47.5545, on current list 47.5545 (normalized score 6)

Entrance Rank (*): mean 881.00 (minimum 881, maximum 881)

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Below is additional information about this entry.

Display (text): Arnold1, Srsieve, CRUS, PRST

Display (short): Arnold1

Database id: 10608 (do not use this database id, it is subject to change)

Proof program: PRST The primes from this code accounts for 0.281% of the (active) primes and 0.040% of the (active) score for this program.

Entry last modified: 2026-01-05 10:37:19

Code name (*):	A81
Persons (*):	1 (counting humans only)
Projects (*):	1 (counting projects only)
Display (HTML):	Arnold1, Srsieve, CRUS, PRST
Number of primes:	total 1
Unverified Primes:	0 (prime table entries marked 'Composite','Untested', or 'InProcess'
Score for Primes (*):	total 47.5545, on current list 47.5545 (normalized score 6)
Entrance Rank (*):	mean 881.00 (minimum 881, maximum 881)

Display (text):	Arnold1, Srsieve, CRUS, PRST
Display (short):	Arnold1
Database id:	10608 (do not use this database id, it is subject to change)
Proof program:	PRST The primes from this code accounts for 0.281% of the (active) primes and 0.040% of the (active) score for this program.
Entry last modified:	2026-01-05 10:37:19