Question

Algorithm to find amount of unique number sequences without repeating numbers?

score 286 · Answer 1 · 2026-05-10 14:04:48

286

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Algorithm to find amount of unique number sequences without repeating numbers?

Published on 10 May 2026 - 14:04

score 58 · Answer 2 · 2026-04-15 06:28:20

58

Views

Characterization of the solutions to $x^2 \equiv a \ (\text{mod} \ p),$ where $p=8n+5$ is a prime.

Published on 15 Apr 2026 - 6:28

score 209 · Answer 3 · 2026-05-11 09:15:11

209

Views

Lift of a generator of a non-trivial quotient of a cyclic group with prime power order must be a generator of the whole group

Published on 11 May 2026 - 9:15

score 447 · Answer 4 · 2026-04-16 04:41:33

447

Views

Can you determine a set of values from a set of distinct sums

Published on 16 Apr 2026 - 4:41

score 79 · Answer 5 · 2026-05-10 18:03:55

79

Views

Solutions of $x^2 \equiv \pm 2 \ (\text{mod} \ p)$ and primitive root modulo $p.$

Published on 10 May 2026 - 18:03

score 44 · Answer 6 · 2026-04-11 15:58:32

44

Views

Non-Linear Diophantine Equation in Two Variables

Published on 11 Apr 2026 - 15:58

score 238 · Answer 7 · 2026-04-17 15:45:12

238

Views

$a^3+25b^3+5c^3-15abc=0$ only if $a=b=c=0$

Published on 17 Apr 2026 - 15:45

score 123 · Answer 8 · 2026-04-14 07:46:29

123

Views

Proof that a square quadratic discriminant implies that integers suffice for factorisation

Published on 14 Apr 2026 - 7:46

score 57 · Answer 9 · 2026-04-13 14:52:52

57

Views

Finding the $n$-th number with a single prime factor

Published on 13 Apr 2026 - 14:52

score 68 · Answer 10 · 2026-04-15 23:30:41

68

Views

integer n as a product of primes, 2, 3,...P, P is less than or equal to $\sqrt{n}$

Published on 15 Apr 2026 - 23:30

score 227 · Answer 11 · 2026-04-15 11:02:07

227

Views

if the product of all unique positive divisors of n a and p

Published on 15 Apr 2026 - 11:02

score 318 · Answer 12 · 2026-05-10 13:46:05

318

Views

Probable prime tests for generalized repunit numbers

Published on 10 May 2026 - 13:46

score 67 · Answer 13 · 2026-04-22 09:43:35

67

Views

Proofreading of a short passage (number theory)

Published on 22 Apr 2026 - 9:43

score 91 · Answer 14 · 2026-04-14 22:03:19

Let $p$ be a prime. Prove that $x^m \bmod p = 1$ has at most $m$ solutions for $x \in U(p)$ using only group theory (no polynomials allowed)

score 849 · Answer 15 · 2026-04-13 10:26:39

849

Views

Are there positive integers $a$ and $b$ such that $a(a^2-1)=2b^2$?

Published on 13 Apr 2026 - 10:26

List Question

Algorithm to find amount of unique number sequences without repeating numbers?

Characterization of the solutions to $x^2 \equiv a \ (\text{mod} \ p),$ where $p=8n+5$ is a prime.

Lift of a generator of a non-trivial quotient of a cyclic group with prime power order must be a generator of the whole group

Can you determine a set of values from a set of distinct sums

Solutions of $x^2 \equiv \pm 2 \ (\text{mod} \ p)$ and primitive root modulo $p.$

Non-Linear Diophantine Equation in Two Variables

$a^3+25b^3+5c^3-15abc=0$ only if $a=b=c=0$

Proof that a square quadratic discriminant implies that integers suffice for factorisation

Finding the $n$-th number with a single prime factor

integer n as a product of primes, 2, 3,...P, P is less than or equal to $\sqrt{n}$

if the product of all unique positive divisors of n a and p

Probable prime tests for generalized repunit numbers

Proofreading of a short passage (number theory)

Let $p$ be a prime. Prove that $x^m \bmod p = 1$ has at most $m$ solutions for $x \in U(p)$ using only group theory (no polynomials allowed)

Are there positive integers $a$ and $b$ such that $a(a^2-1)=2b^2$?

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