List questions from number-theory

Published on 10 May 2026 - 14:04

157

Views

Classical intro to modern Number theory

Published on 11 Apr 2026 - 11:21

86

Views

3 digit numbers whose one digit is the average of the other two

Published on 16 Apr 2026 - 5:21

513

Views

Prove that gcd$(n^2+1, (n+1)^2+1)$ is either 1 or 5

Published on 17 Apr 2026 - 1:21

228

Views

Determine singular primes of quadratic ring $\mathbb{Z}[\sqrt{d}]$

Published on 15 Apr 2026 - 7:58

296

Views

What would the 3D graph of GCD(x, y) and LCM(x, y) look like?

Published on 11 May 2026 - 4:40

448

Views

Undersanding definition of Riemann-Stieltjes Integral used in Edwards book

Published on 10 May 2026 - 15:56

648

Views

IMO 2011: Prove that, for all integers $m$ and $n$ with $f(m)<f(n)$, the number $f(n)$ is divisible by $f(m)$

Published on 11 May 2026 - 2:50

281

Views

How many 2x2 matrices with module 27 inputs exist with the condition being invertible?

Published on 15 Apr 2026 - 2:59

81

Views

Am I using fermat's little theorem correctly?

Published on 12 Apr 2026 - 7:43

108

Views

Fermat's Little Theorem: $24^{(54n + 1)} +11 \equiv 1 \mod 19$, where $n \in \mathbb{Z}^+.$

Published on 14 Apr 2026 - 22:28

60

Views

"Close encounters" between two big powers: how to solve?

Published on 11 Apr 2026 - 2:06

85

Views

Number repositioning

Published on 15 Apr 2026 - 8:12

184

Views

Irrationality of $r\sqrt{5}$ for rational number $r$?

Published on 16 Apr 2026 - 1:25

List Question

Finding a formula for a sequence or proving it is impossible

Classical intro to modern Number theory

Suggested Reading? Applications of the Krull-Schmidt Theorem for Groups

3 digit numbers whose one digit is the average of the other two

Prove that gcd$(n^2+1, (n+1)^2+1)$ is either 1 or 5

Determine singular primes of quadratic ring $\mathbb{Z}[\sqrt{d}]$

What would the 3D graph of GCD(x, y) and LCM(x, y) look like?

Undersanding definition of Riemann-Stieltjes Integral used in Edwards book

IMO 2011: Prove that, for all integers $m$ and $n$ with $f(m)<f(n)$, the number $f(n)$ is divisible by $f(m)$

How many 2x2 matrices with module 27 inputs exist with the condition being invertible?

Am I using fermat's little theorem correctly?

Fermat's Little Theorem: $24^{(54n + 1)} +11 \equiv 1 \mod 19$, where $n \in \mathbb{Z}^+.$

"Close encounters" between two big powers: how to solve?

Number repositioning

Irrationality of $r\sqrt{5}$ for rational number $r$?

Trending Questions

Popular # Hahtags

Popular Questions