Factoring numbers is a concept learnt with the introduction of divisibility in schools, yet the process can be exceptionally challenging and difficult. This category addresses topics from the basic divisibility tests to perfection and the general problem of extracting prime factors.
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Built by a French amateur, E.-O. Carissan, around 1919. Shallit, Williams and Morain include photographs and references to their paper.
Aimed at grade school students and teachers, includes course guidelines, worksheets, and factor tables up to 600.
Online calculator that factorizes large numbers, specified by formula.
Java applet that can be used to find 20- or 30-digit factors of numbers or numerical expressions up to 1000 digits long. It also computes the number and sum of divisors, the Euler's totient and moebius functions, and the decomposition of the number in a sum of up to four squares.
Leonid Durman's Fermat number factoring site and program.
Cash prizes for new factors of Fermat numbers Fn, for n = 12 through 22.
(December 31, 2004)
Online calculator that factorizes large numbers, specified by formula.
Built by a French amateur, E.-O. Carissan, around 1919. Shallit, Williams and Morain include photographs and references to their paper.
Leonid Durman's Fermat number factoring site and program.
Aimed at grade school students and teachers, includes course guidelines, worksheets, and factor tables up to 600.
Java applet that can be used to find 20- or 30-digit factors of numbers or numerical expressions up to 1000 digits long. It also computes the number and sum of divisors, the Euler's totient and moebius functions, and the decomposition of the number in a sum of up to four squares.
Cash prizes for new factors of Fermat numbers Fn, for n = 12 through 22.
(December 31, 2004)
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February 24, 2020 at 6:35:02 UTC
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- Recently edited by cherel
- Recently edited by cherel