Category:Noncototients
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This category contains results about Noncototients.
Definitions specific to this category can be found in Definitions/Noncototients.
A noncototient is a positive integer $n$ such that:
- $\nexists m \in \Z_{>0}: m - \map \phi m = n$
where $\map \phi m$ denotes the Euler $\phi$ function.
That is, a noncototient is a positive integer which is not the cototient of any positive integer.