Proof-code: x28

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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 x28, one of those codes.

Code name (*): x28 (See the descriptive data below.)

Persons (*): 1 (counting humans only)

Projects (*): 0 (counting projects only)

Display (HTML): Iskra

Number of primes: total 22

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

Score for Primes (*): total 44.3565, on current list 42.9211

Entrance Rank (*): mean 108.00 (minimum 108, maximum 108)

Descriptive Data: (report abuse)

Proving primality using a test for numbers of the form A²3ⁿ+1, n odd, described in a paper published by me and Pedro Berrizbeitia in the Proceedings of the American Mathematical Society 130 (2002), 363-365.

I have several computers in the mathematics department running a program written in C testing these numbers.

I am a member of this code and I would like to:

Below is additional information about this entry.

Display (text): Iskra

Display (short): Iskra

Database id: 146 (do not use this database id, it is subject to change)

Proof program: unknown

Entry last modified: 2024-04-19 22:37:29

Code name (*):	x28 (See the descriptive data below.)
Persons (*):	1 (counting humans only)
Projects (*):	0 (counting projects only)
Display (HTML):	Iskra
Number of primes:	total 22
Unverified Primes:	0 (prime table entries marked 'Composite','Untested', or 'InProcess'
Score for Primes (*):	total 44.3565, on current list 42.9211
Entrance Rank (*):	mean 108.00 (minimum 108, maximum 108)

Display (text):	Iskra
Display (short):	Iskra
Database id:	146 (do not use this database id, it is subject to change)
Proof program:	unknown
Entry last modified:	2024-04-19 22:37:29