Question

Carmichael number divisible by a given positive integer

score 331 · Answer 1 · 2026-02-23 06:52:58

331

Views

Carmichael number divisible by a given positive integer

Published on 23 Feb 2026 - 6:52

score 142 · Answer 2 · 2026-03-27 14:57:47

142

Views

Is this proof regarding odd perfect numbers valid?

Published on 27 Mar 2026 - 14:57

score 197 · Answer 3 · 2020-10-24 19:16:09

197

Views

Sketch of proof concerning a conjecture of Vasile Cirtoaje : $(1-x)^{(2x)^k}+x^{(2(1-x))^k}\leq 1$ with $k\geq1$ and $0<x\leq \frac{1}{2}$

Published on 24 Oct 2020 - 19:16

score 54 · Answer 4 · 2026-03-26 19:24:06

54

Views

Perfect powers in Horadam sequence

Published on 26 Mar 2026 - 19:24

score 382 · Answer 5 · 2020-11-02 12:38:13

382

Views

Two homotopy equivalent closed $n$-manifolds are homeomorphic

Published on 02 Nov 2020 - 12:38

score 258 · Answer 6 · 2020-11-06 07:53:33

258

Views

Examples of conjectures that were widely believed to be true but turned out to be false

Published on 06 Nov 2020 - 7:53

score 242 · Answer 7 · 2020-11-07 00:32:58

242

Views

Is $X = (n-1)^n + n$ always composite for $n \geq 4 \in \Bbb Z$?

Published on 07 Nov 2020 - 0:32

score 260 · Answer 8 · 2026-03-29 20:49:43

260

Views

A new method for finding a solution (when they exist) to $x^2 = a \pmod p$?

Published on 29 Mar 2026 - 20:49

score 259 · Answer 9 · 2026-03-27 10:10:52

259

Views

On the nearest-square function - Part 2 and the quantity $m^2 - p^k$ where $p^k m^2$ is an odd perfect number

Published on 27 Mar 2026 - 10:10

score 144 · Answer 10 · 2020-11-14 14:29:59

144

Views

Conjecture about :$\frac{a}{\sqrt[4]{8(b^4+c^4)}}+\frac{b}{a+c}+\frac{c}{a+b}\geq\sqrt{\frac94+\frac32 \cdot \frac{(a-b)^2}{ab+bc+ca}}$

Published on 14 Nov 2020 - 14:29

score 182 · Answer 11 · 2026-04-02 14:13:57

182

Views

Can the Infinite Product $\prod_{n=1}^\infty \frac{a_n}{a_n + 1}$ Converge or Diverge to Zero?

Published on 02 Apr 2026 - 14:13

score 140 · Answer 12 · 2020-11-19 15:18:53

140

Views

Conjecture: $a^{(2(1-a))^{\frac{1}{n}}}+b^{(2(1-b))^{\frac{1}{n}}}+c^{(2(1-c))^{\frac{1}{n}}}+\frac{c}{n}\leq 1$

Published on 19 Nov 2020 - 15:18

score 195 · Answer 13 · 2026-02-24 03:51:46

195

Views

Conjecture: Are there infinitely many triangular numbers which are of the form $qp$ , where $p$,$q$ are distinct primes?

Published on 24 Feb 2026 - 3:51

score 176 · Answer 14 · 2020-11-28 18:02:36

176

Views

Conjecture about the Jordan-Polya numbers

Published on 28 Nov 2020 - 18:02

score 107 · Answer 15 · 2026-03-25 23:37:18

107

Views

About stronger version of Goldbach conjecture

Published on 25 Mar 2026 - 23:37

List Question

Carmichael number divisible by a given positive integer

Is this proof regarding odd perfect numbers valid?

Sketch of proof concerning a conjecture of Vasile Cirtoaje : $(1-x)^{(2x)^k}+x^{(2(1-x))^k}\leq 1$ with $k\geq1$ and $0<x\leq \frac{1}{2}$

Perfect powers in Horadam sequence

Two homotopy equivalent closed $n$-manifolds are homeomorphic

Examples of conjectures that were widely believed to be true but turned out to be false

Is $X = (n-1)^n + n$ always composite for $n \geq 4 \in \Bbb Z$?

A new method for finding a solution (when they exist) to $x^2 = a \pmod p$?

On the nearest-square function - Part 2 and the quantity $m^2 - p^k$ where $p^k m^2$ is an odd perfect number

Conjecture about :$\frac{a}{\sqrt[4]{8(b^4+c^4)}}+\frac{b}{a+c}+\frac{c}{a+b}\geq\sqrt{\frac94+\frac32 \cdot \frac{(a-b)^2}{ab+bc+ca}}$

Can the Infinite Product $\prod_{n=1}^\infty \frac{a_n}{a_n + 1}$ Converge or Diverge to Zero?

Conjecture: $a^{(2(1-a))^{\frac{1}{n}}}+b^{(2(1-b))^{\frac{1}{n}}}+c^{(2(1-c))^{\frac{1}{n}}}+\frac{c}{n}\leq 1$

Conjecture: Are there infinitely many triangular numbers which are of the form $qp$ , where $p$,$q$ are distinct primes?

Conjecture about the Jordan-Polya numbers

About stronger version of Goldbach conjecture

Trending Questions

Popular # Hahtags

Popular Questions