List questions from totient-function

Published on 25 Mar 2017 - 20:54

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Dirichlet Convolution of the Mobius Function with Itself

Published on 25 Mar 2026 - 15:57

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Euler Phi Function and Divisibility

Published on 01 Apr 2017 - 23:19

121

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Euler Phi Function Equality

Published on 02 Apr 2017 - 0:02

156

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Evaluate $\sum_{n=1}^{64}(-1)^n \left\lfloor \frac{64}{n} \right\rfloor \varphi(n)$

Published on 02 Apr 2017 - 23:12

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Prove $\sum_{d|n} \frac{\Phi(d)}{d} = \prod_{i=1}^r (1 + a_i - \frac{a_i}{p_i})$

Published on 25 Mar 2026 - 14:46

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Solve de equation: σ(∅(n))=2^n

Published on 25 Mar 2026 - 16:45

144

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Finding a General Explicit Formula for $\lambda(n)$ for when $n\neq p^k$

Published on 25 Mar 2026 - 7:44

90

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Dirichlet series for $\frac{\zeta(1-s)}{\zeta(s)}$

Published on 26 Mar 2026 - 2:56

72

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Calculating the nth totative of a large primorial

Published on 23 Feb 2026 - 12:05

76

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Existence proof of Euler's theorem

Published on 25 Mar 2026 - 9:23

72

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How to compute the totient function when the input is not a prime?

Published on 15 Feb 2023 - 10:14

33

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$\forall z \in \mathbb C, |z|>1$, calculate $\sum_{(p,q)\in\Delta} (z^{p+q}-1)^{-1}$

Published on 17 Feb 2023 - 15:08

101

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Number of multiples of p less than $p^k$ for p prime

Published on 20 Feb 2023 - 10:19

134

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A connection between Fibonacci numbers and the golden ratio

Published on 26 Mar 2026 - 6:34

List Question

Is there a formula for the periodicity of a^b mod n?

Dirichlet Convolution of the Mobius Function with Itself

Euler Phi Function and Divisibility

Euler Phi Function Equality

Evaluate $\sum_{n=1}^{64}(-1)^n \left\lfloor \frac{64}{n} \right\rfloor \varphi(n)$

Prove $\sum_{d|n} \frac{\Phi(d)}{d} = \prod_{i=1}^r (1 + a_i - \frac{a_i}{p_i})$

Solve de equation: σ(∅(n))=2^n

Finding a General Explicit Formula for $\lambda(n)$ for when $n\neq p^k$

Dirichlet series for $\frac{\zeta(1-s)}{\zeta(s)}$

Calculating the nth totative of a large primorial

Existence proof of Euler's theorem

How to compute the totient function when the input is not a prime?

$\forall z \in \mathbb C, |z|>1$, calculate $\sum_{(p,q)\in\Delta} (z^{p+q}-1)^{-1}$

Number of multiples of p less than $p^k$ for p prime

A connection between Fibonacci numbers and the golden ratio

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