Proof-code: x42

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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 x42, one of those codes.

Code name (*): x42 (See the descriptive data below.)

Persons (*): 3 (counting humans only)

Projects (*): 0 (counting projects only)

Display (HTML): Broadhurst, Water, Leyland, OpenPFGW

Number of primes: total 2

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

Score for Primes (*): total 32.7912

Descriptive Data: (report abuse)

Factorization help was provided by Paul Leyland. The generalized Lucas number U(12071,-1,2521) was proven prime by an implementation of the Williams-Lenstra method, using Pari-GP.

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Below is additional information about this entry.

Display (text): Broadhurst, Water, Leyland, OpenPFGW

Display (short): Broadhurst, Water & Leyland

Database id: 152 (do not use this database id, it is subject to change)

Proof program: unknown

Entry last modified: 2024-11-24 02:37:08

Code name (*):	x42 (See the descriptive data below.)
Persons (*):	3 (counting humans only)
Projects (*):	0 (counting projects only)
Display (HTML):	Broadhurst, Water, Leyland, OpenPFGW
Number of primes:	total 2
Unverified Primes:	0 (prime table entries marked 'Composite','Untested', or 'InProcess'
Score for Primes (*):	total 32.7912

Display (text):	Broadhurst, Water, Leyland, OpenPFGW
Display (short):	Broadhurst, Water & Leyland
Database id:	152 (do not use this database id, it is subject to change)
Proof program:	unknown
Entry last modified:	2024-11-24 02:37:08