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Proper Factor


A proper factor of a positive integer n is a factor of n other than 1 or n (Derbyshire 2004, p. 32). For example, 2 and 3 are positive proper factors of 6, but 1 and 6 are not.

Compare with the term proper divisor, which means a factor of n other than n (but including 1).


See also

Proper Divisor

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References

Derbyshire, J. Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics. New York: Penguin, 2004.

Referenced on Wolfram|Alpha

Proper Factor

Cite this as:

Weisstein, Eric W. "Proper Factor." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ProperFactor.html

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