Proof-code: L4879
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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 L4879, one of those codes.

Code name (*):L4879   (See the descriptive data below.)
Persons (*):2 (counting humans only)
Projects (*):0 (counting projects only)
Display (HTML):Propper, Batalov, Srsieve, LLR
Number of primes:total 9
Unverified Primes:0 (prime table entries marked 'Composite','Untested', or 'InProcess')
Score for Primes (*):total 49.7896, on current list 49.7896 (normalized score 307)
Entrance Rank (*):mean 147.56 (minimum 72, maximum 202)

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This code is primarily used for testing certain Proth primes, and determining order of 2 modulo these primes. Following tradition, Proth.exe was initially used for the latter, but this was later refactored with a much faster solution based on minor changes to the code of LLR v.3.8.d. Order of 2 modulo primes where base is composite is only possible with this code (Proth.exe accepts k*q^n+1 only with prime q for the order test).

Some other srsieve'd+LLR'd primes also fit this code (e.g. Near-repdigits).

Below is additional information about this entry.
Display (text):Propper, Batalov, Srsieve, LLR
Display (short):Propper & Batalov
Database id:8822 (do not use this database id, it is subject to change)
Proof program:LLR  The primes from this code accounts for 0.184% of the (active) primes and 0.457% of the (active) score for this program.
Entry last modified:2019-11-15 00:20:16