Knödel number
id:
kn-del-number-232-6483645
title:
Knödel number
text:
In number theory, an n-Knödel number for a given positive integer n is a composite number m with the property that each i < m coprime to m satisfies i m − n ≡ 1 . The concept is named after Walter Knödel. The set of all n-Knödel numbers is denoted Kn.
The special case K1 is the Carmichael numbers. There are infinitely many n-Knödel numbers for a given n. Due to Euler's theorem every composite number m is an n-Knödel number for n = m − φ where φ is Euler's totient function.
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wiki
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encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Kn%C3%B6del_number
date created:
date modified:
2023-10-22T19:17:01Z
main entity:
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13
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