Question

describe all $n \in \mathbb{N}$ such that $-1 \in \left \langle 2 \right \rangle \leq (\mathbb{Z}/n\mathbb{Z})^x $

score 75 · Answer 1 · 2026-04-15 23:53:21

75

Views

describe all $n \in \mathbb{N}$ such that $-1 \in \left \langle 2 \right \rangle \leq (\mathbb{Z}/n\mathbb{Z})^x $

Published on 15 Apr 2026 - 23:53

score 101 · Answer 2 · 2026-05-14 08:51:11

101

Views

Are $\mathbb{Z}^_{28}$, $\mathbb{Z}^_{4}×\mathbb{Z}^_{7}$, $\mathbb{Z}^_{2}×\mathbb{Z}^*_{14}$ cyclic groups?

Published on 14 May 2026 - 8:51

score 57 · Answer 3 · 2026-04-12 05:01:15

57

Views

Show the given property about divisibility

Published on 12 Apr 2026 - 5:01

score 142 · Answer 4 · 2026-05-14 08:51:10

142

Views

Prove that lcm$(a,b)$ = $k$·lcm$(a/k,b/k)$

Published on 14 May 2026 - 8:51

score 30 · Answer 5 · 2026-04-13 03:36:26

30

Views

Given the number, find the row and the column?

Published on 13 Apr 2026 - 3:36

score 87 · Answer 6 · 2026-05-14 20:53:18

87

Views

Cubic of a Gauss sum

Published on 14 May 2026 - 20:53

score 87 · Answer 7 · 2026-05-14 08:54:26

87

Views

Find the solutions of equations of the form $ax^2+by^2 = z^2$ in $\mathbb{Q}_p$

Published on 14 May 2026 - 8:54

score 32 · Answer 8 · 2026-05-14 20:53:18

32

Views

Positions of coinciding bits

Published on 14 May 2026 - 20:53

score 837 · Answer 9 · 2026-04-16 08:35:09

837

Views

Infinitely many $n$ such that $2^n-n$ is divisible by a prime

Published on 16 Apr 2026 - 8:35

score 147 · Answer 10 · 2026-05-10 15:02:48

147

Views

Does $lcm\{1,2,...,n\} = \prod_{p\leq n, p\in\mathbb{P}}p^{\lceil \frac{log(n)}{log(p)}\rceil}$?

Published on 10 May 2026 - 15:02

score 463 · Answer 11 · 2026-04-13 21:00:45

463

Views

Factorization of Polynomial $X^n -1$

Published on 13 Apr 2026 - 21:00

score 241 · Answer 12 · 2026-04-19 10:53:38

241

Views

$p$ and $6p+1$ both palindrome - primes. Is $(131/787)$ the only example?

Published on 19 Apr 2026 - 10:53

score 111 · Answer 13 · 2026-04-14 20:44:56

111

Views

Relatively prime solutions of the equation $7x^2+59y^2=3^n$

Published on 14 Apr 2026 - 20:44

score 48 · Answer 14 · 2026-04-08 17:05:08

48

Views

About question of fundamental theorem of arithmetic

Published on 08 Apr 2026 - 17:05

score 60 · Answer 15 · 2026-04-14 05:13:57

60

Views

Examples of prime-like entities on rings other than natural numbers

Published on 14 Apr 2026 - 5:13

List Question

describe all $n \in \mathbb{N}$ such that $-1 \in \left \langle 2 \right \rangle \leq (\mathbb{Z}/n\mathbb{Z})^x $

Are $\mathbb{Z}^_{28}$, $\mathbb{Z}^_{4}×\mathbb{Z}^_{7}$, $\mathbb{Z}^_{2}×\mathbb{Z}^*_{14}$ cyclic groups?

Show the given property about divisibility

Prove that lcm$(a,b)$ = $k$·lcm$(a/k,b/k)$

Given the number, find the row and the column?

Cubic of a Gauss sum

Find the solutions of equations of the form $ax^2+by^2 = z^2$ in $\mathbb{Q}_p$

Positions of coinciding bits

Infinitely many $n$ such that $2^n-n$ is divisible by a prime

Does $lcm\{1,2,...,n\} = \prod_{p\leq n, p\in\mathbb{P}}p^{\lceil \frac{log(n)}{log(p)}\rceil}$?

Factorization of Polynomial $X^n -1$

$p$ and $6p+1$ both palindrome - primes. Is $(131/787)$ the only example?

Relatively prime solutions of the equation $7x^2+59y^2=3^n$

About question of fundamental theorem of arithmetic

Examples of prime-like entities on rings other than natural numbers

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