List questions from number-theory

Published on 26 Feb 2018 - 6:35

71

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Proving that this is true for all x in the sequence.

Published on 26 Feb 2018 - 8:19

35

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Generic form of this function of factorization

Published on 12 Apr 2026 - 23:10

75

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Interesting quirk of $1.618033989^2$

Published on 12 Apr 2026 - 4:40

26

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Problem involving Pell's equation.

Published on 12 Apr 2026 - 5:16

398

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How to show the $p$ minus primitive root is also a primitive root for $p \equiv1 \pmod {4}$

Published on 09 Apr 2026 - 2:44

44

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Prove that $(a,c)\cdot (a,d)=a\cdot(a,(b,(c,d)))$ if $a,b,c,d\in\mathbb{Z}$ and $ab=cd$

Published on 26 Feb 2018 - 18:05

232

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Ramanujan's $\pi(x)^{2}<{\frac {ex}{\log x}}\pi {\bigg (}{\frac {x}{e}}{\bigg )}$

Published on 25 Mar 2026 - 20:19

80

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Fractions everywhere

Published on 10 Apr 2026 - 16:03

88

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Determine whether the following series is convergent or not

Published on 25 Mar 2026 - 20:18

1.1k

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Representation of Positive Integers by Binary Quadratic Forms

Published on 24 Mar 2026 - 17:30

69

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Sum's of powers

Published on 10 Apr 2026 - 2:11

422

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Solving $x^2+xy+y^2 \equiv 0\pmod{n^2} $

Published on 25 Mar 2026 - 17:45

160

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Is there another prime $p$ such that $S(p)$ is prime?

Published on 09 Apr 2026 - 3:38

1.1k

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Multiplication of Moduli in Modular Congruences

Published on 01 Apr 2026 - 5:09

List Question

Numbers written in both forms

Proving that this is true for all x in the sequence.

Generic form of this function of factorization

Interesting quirk of $1.618033989^2$

Problem involving Pell's equation.

How to show the $p$ minus primitive root is also a primitive root for $p \equiv1 \pmod {4}$

Prove that $(a,c)\cdot (a,d)=a\cdot(a,(b,(c,d)))$ if $a,b,c,d\in\mathbb{Z}$ and $ab=cd$

Ramanujan's $\pi(x)^{2}<{\frac {ex}{\log x}}\pi {\bigg (}{\frac {x}{e}}{\bigg )}$

Fractions everywhere

Determine whether the following series is convergent or not

Representation of Positive Integers by Binary Quadratic Forms

Sum's of powers

Solving $x^2+xy+y^2 \equiv 0\pmod{n^2} $

Is there another prime $p$ such that $S(p)$ is prime?

Multiplication of Moduli in Modular Congruences

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