Factor: an integer factorization program for the IBM PC
117. R. P. Brent,
Factor: an integer factorization program for the IBM PC,
Technical Report TR-CS-89-23, October 1989, 7 pp.
(Revised March 1994.)
Program and factor database:
Factor is a program which accesses a large
database of factors of integers of the form
an + 1.
As of October 1989 the database contains more than
30,000 factors of size at least 104.
The program Factor implements a simple version
of the Elliptic Curve algorithm
if it is unable to complete a factorization using trial division and
the factor database.
Factor is written in Turbo Pascal and runs on IBM PC
or compatible computers.
This report describes Factor and various related programs.
The programs and the factor database are available as a self-extracting
The program Factor is a convenient way of accessing and updating
the factor tables .
As of April 2000, the database mentioned in the Abstract has grown to
more than 333,000 factors.
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