Question

Is ${n^2}/D(n^2) \in \mathbb{N}$, if $q^k n^2$ is an odd perfect number?

score 90 · Answer 1 · 2026-03-25 04:40:48

90

Views

Is ${n^2}/D(n^2) \in \mathbb{N}$, if $q^k n^2$ is an odd perfect number?

Published on 25 Mar 2026 - 4:40

score 95 · Answer 2 · 2018-07-24 17:55:10

95

Views

Conjecture about special grid of numbers

Published on 24 Jul 2018 - 17:55

score 345 · Answer 3 · 2018-07-30 03:11:20

345

Views

Show that $\int_0^1 4 \space\operatorname{li}(x)^3 \space (x-1) \space x^{-3} dx = \zeta(3) $

Published on 30 Jul 2018 - 3:11

score 79 · Answer 4 · 2026-03-25 04:42:32

79

Views

Specific evidence for or against the Descartes-Frenicle-Sorli conjecture on odd perfect numbers

Published on 25 Mar 2026 - 4:42

score 55 · Answer 5 · 2026-03-25 04:42:39

55

Views

On the quantity ${n^2}/D(n^2)$ where $n^2$ is the non-Euler part of members of the OEIS sequence A228059

Published on 25 Mar 2026 - 4:42

score 113 · Answer 6 · 2018-08-05 17:44:34

113

Views

Positive integers have the form $a^2+b^2+c^2+2^d$

Published on 05 Aug 2018 - 17:44

score 190 · Answer 7 · 2018-08-07 06:58:29

190

Views

Understanding "A note on the union-closed sets conjecture"

Published on 07 Aug 2018 - 6:58

score 206 · Answer 8 · 2026-03-25 11:03:28

206

Views

Is it possible to narrow down a domain of possible counter-examples to the Collatz Conjecture?

Published on 25 Mar 2026 - 11:03

score 14.3k · Answer 9 · 2026-03-25 06:03:25

14.3k

Views

Is there any conjecture that has been proved to be solvable/provable but whose direct solution/proof is not yet known?

Published on 25 Mar 2026 - 6:03

score 185 · Answer 10 · 2026-03-25 06:08:33

185

Views

Question about a result on odd perfect numbers

Published on 25 Mar 2026 - 6:08

score 197 · Answer 11 · 2018-08-18 19:31:44

197

Views

Conjecture that $ \frac{\gcd(a+b,ab)}{\gcd(a,b)} \mid \gcd(a,b)$

Published on 18 Aug 2018 - 19:31

score 149 · Answer 12 · 2018-08-18 20:16:42

149

Views

Conjecture: $ \gcd(\operatorname{rad}(a+b) ,ab)= \operatorname{rad}(\gcd(a,b))$

Published on 18 Aug 2018 - 20:16

score 117 · Answer 13 · 2018-08-21 06:13:54

117

Views

A conjecture of exercise type: $\gcd(a,b)^2=\gcd(a^2+b^2,ab)$

Published on 21 Aug 2018 - 6:13

score 124 · Answer 14 · 2026-03-25 04:43:30

124

Views

Prime twins and $ f(z) = \sum_p \frac{\ln(p) \space \ln(p+2)}{p^{z/2} \space (p+2)^{z/2}} $

Published on 25 Mar 2026 - 4:43

score 103 · Answer 15 · 2026-03-25 09:41:06

103

Views

A problem inspired by the Twin Prime conjecture

Published on 25 Mar 2026 - 9:41

List Question

Is ${n^2}/D(n^2) \in \mathbb{N}$, if $q^k n^2$ is an odd perfect number?

Conjecture about special grid of numbers

Show that $\int_0^1 4 \space\operatorname{li}(x)^3 \space (x-1) \space x^{-3} dx = \zeta(3) $

Specific evidence for or against the Descartes-Frenicle-Sorli conjecture on odd perfect numbers

On the quantity ${n^2}/D(n^2)$ where $n^2$ is the non-Euler part of members of the OEIS sequence A228059

Positive integers have the form $a^2+b^2+c^2+2^d$

Understanding "A note on the union-closed sets conjecture"

Is it possible to narrow down a domain of possible counter-examples to the Collatz Conjecture?

Is there any conjecture that has been proved to be solvable/provable but whose direct solution/proof is not yet known?

Question about a result on odd perfect numbers

Conjecture that $ \frac{\gcd(a+b,ab)}{\gcd(a,b)} \mid \gcd(a,b)$

Conjecture: $ \gcd(\operatorname{rad}(a+b) ,ab)= \operatorname{rad}(\gcd(a,b))$

A conjecture of exercise type: $\gcd(a,b)^2=\gcd(a^2+b^2,ab)$

Prime twins and $ f(z) = \sum_p \frac{\ln(p) \space \ln(p+2)}{p^{z/2} \space (p+2)^{z/2}} $

A problem inspired by the Twin Prime conjecture

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