Question

Upper and Lower bounds on the nth prime number

score 951 · Answer 1 · 2026-04-15 10:33:40

951

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Upper and Lower bounds on the nth prime number

Published on 15 Apr 2026 - 10:33

score 82 · Answer 2 · 2026-04-29 12:48:02

82

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references for the quotient of a product of hyperbolic 2- and 3- spaces by $SL_2$ over a number ring

Published on 29 Apr 2026 - 12:48

score 208 · Answer 3 · 2026-04-14 20:46:32

208

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A closed solution of F. G. Frobenius Coin Problem for $n=3$??

Published on 14 Apr 2026 - 20:46

score 108 · Answer 4 · 2026-04-11 18:19:52

108

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Given a positive integer $m$ , how can I construct a positive integer $k$ such that $\varphi(n)=k$ has exactly $m$ solutions?

Published on 11 Apr 2026 - 18:19

score 3.1k · Answer 5 · 2026-04-10 15:36:53

3.1k

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The product of three consecutive integers is ...? Odd? Divisible by $4$? by $5$? by $6$? by $12$?

Published on 10 Apr 2026 - 15:36

score 211 · Answer 6 · 2026-04-15 10:04:25

211

Views

if $b$ divides $ck$ and $b$ and $c$ are relatively prime, then $b$ must divides $k$

Published on 15 Apr 2026 - 10:04

score 143 · Answer 7 · 2026-04-15 12:25:36

143

Views

Is $198585576189$ a member of OEIS sequence A228059?

Published on 15 Apr 2026 - 12:25

score 56 · Answer 8 · 2026-04-15 15:45:44

56

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 15 Apr 2026 - 15:45

score 99 · Answer 9 · 2026-04-17 13:01:00

99

Views

Analytical problem from CSMO 2018

Published on 17 Apr 2026 - 13:01

score 188 · Answer 10 · 2026-04-16 00:18:54

188

Views

$p >2$ is a prime, any facts about congruence relation between the class number of $Q(\sqrt p)$ and $Q(\sqrt{-p})$?

Published on 16 Apr 2026 - 0:18

score 61 · Answer 11 · 2026-04-11 05:30:38

61

Views

Solvability of congruences in number theory.

Published on 11 Apr 2026 - 5:30

score 174 · Answer 12 · 2026-03-25 11:54:13

174

Views

Any suggestions on how to compute $\limsup |\cos n|^{n^2}$?

Published on 25 Mar 2026 - 11:54

score 648 · Answer 13 · 2026-04-17 15:28:54

648

Views

Help proving $\sum_{pq \leq x} \log p\log q \frac{\log x}{\log pq} = \sum_{pq \leq x} \log p\log q + O(x)$

Published on 17 Apr 2026 - 15:28

score 123 · Answer 14 · 2026-04-15 09:53:08

123

Views

what are the conditions when $a^n+b^n$ is divisible by $a-b$

Published on 15 Apr 2026 - 9:53

score 84 · Answer 15 · 2026-04-17 11:28:46

84

Views

if $a^3+b^3 +3(a^2+b^2) - 700(a+b)^2 = 0$ then find the sum of all possible values of $a+b$

Published on 17 Apr 2026 - 11:28

List Question

Upper and Lower bounds on the nth prime number

references for the quotient of a product of hyperbolic 2- and 3- spaces by $SL_2$ over a number ring

A closed solution of F. G. Frobenius Coin Problem for $n=3$??

Given a positive integer $m$ , how can I construct a positive integer $k$ such that $\varphi(n)=k$ has exactly $m$ solutions?

The product of three consecutive integers is ...? Odd? Divisible by $4$? by $5$? by $6$? by $12$?

if $b$ divides $ck$ and $b$ and $c$ are relatively prime, then $b$ must divides $k$

Is $198585576189$ a member of OEIS sequence A228059?

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

Analytical problem from CSMO 2018

$p >2$ is a prime, any facts about congruence relation between the class number of $Q(\sqrt p)$ and $Q(\sqrt{-p})$?

Solvability of congruences in number theory.

Any suggestions on how to compute $\limsup |\cos n|^{n^2}$?

Help proving $\sum_{pq \leq x} \log p\log q \frac{\log x}{\log pq} = \sum_{pq \leq x} \log p\log q + O(x)$

what are the conditions when $a^n+b^n$ is divisible by $a-b$

if $a^3+b^3 +3(a^2+b^2) - 700(a+b)^2 = 0$ then find the sum of all possible values of $a+b$

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