Concept information
Terme préférentiel
nontotient number
Définition
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In number theory, a nontotient is a positive integer n which is not a totient number: it is not in the range of Euler's totient function φ, that is, the equation φ(x) = n has no solution x. In other words, n is a nontotient if there is no integer x that has exactly n coprimes below it. All odd numbers are nontotients, except 1, since it has the solutions x = 1 and x = 2.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Nontotient)
Concept générique
Traductions
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français
URI
http://data.loterre.fr/ark:/67375/PSR-F3SMQ1BL-K
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