List questions from elementary-number-theory

Published on 14 Apr 2026 - 17:25

99

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Property prime powers

Published on 09 Apr 2026 - 14:25

188

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A confession and a conjecture $\gcd(a-b,a+b)|2\gcd(a,b)$

Published on 16 Apr 2026 - 10:36

182

Views

the semigroup generated by elementary matrices

Published on 13 Apr 2026 - 13:12

120

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

Published on 12 Apr 2026 - 0:35

426

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Find the maximum value of $a+b$

Published on 13 Apr 2026 - 9:46

121

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$a<b(b+2)$ then $f(a)< 2f(b).$

Published on 15 Apr 2026 - 22:20

1k

Views

Does there exist $a_0$, such that $\{a_n\}_{n=0}^{\infty}$ is unbounded?

Published on 15 Apr 2026 - 7:08

174

Views

Elementary number theory problem about finding a square number with digits with certain properties

Published on 11 Apr 2026 - 9:21

264

Views

Integer solutions to a particular degree 2 equation

Published on 10 Apr 2026 - 13:50

1.9k

Views

How many slices of pizza do we have?

Published on 12 Apr 2026 - 10:12

175

Views

Using AM-GM to reason about the upper bound of an $n$th root of a factorial

Published on 14 Apr 2026 - 0:34

88

Views

When $q$ is prime and a Wieferich prime $p$ divides $\ M=2^q-1\ $ . Why can we conclude $\ p^2\mid M\ $?

Published on 09 Apr 2026 - 5:31

53

Views

Proving that a set is a subspace of $\mathbb{R}^{n}$.

Published on 13 Apr 2026 - 16:05

606

Views

Given GCD of two numbers is 42 and their product is 15876. How many possible sets of members can be found?

Published on 16 Apr 2026 - 16:32

List Question

Is $\phi(n) + \sigma(n) \geq 2n$ always true?

Property prime powers

A confession and a conjecture $\gcd(a-b,a+b)|2\gcd(a,b)$

the semigroup generated by elementary matrices

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

Find the maximum value of $a+b$

$a<b(b+2)$ then $f(a)< 2f(b).$

Does there exist $a_0$, such that $\{a_n\}_{n=0}^{\infty}$ is unbounded?

Elementary number theory problem about finding a square number with digits with certain properties

Integer solutions to a particular degree 2 equation

How many slices of pizza do we have?

Using AM-GM to reason about the upper bound of an $n$th root of a factorial

When $q$ is prime and a Wieferich prime $p$ divides $\ M=2^q-1\ $ . Why can we conclude $\ p^2\mid M\ $?

Proving that a set is a subspace of $\mathbb{R}^{n}$.

Given GCD of two numbers is 42 and their product is 15876. How many possible sets of members can be found?

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