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Built-in Functions

Mathematical Functions

Number Theory

EulerPhi

Usage

• EulerPhi[n] gives the Euler totient function .

Notes

• Integer mathematical function (see Section A.3.10).

•

gives the number of positive integers less than or equal to

which are relatively prime to

.

• See Section 3.2.5.

• See also: FactorInteger, Divisors, MoebiusMu, MultiplicativeOrder, CarmichaelLambda, PowerMod.

• New in Version 1.

Further Examples

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