List questions from prime-numbers

Published on 02 Apr 2026 - 22:07

75

Views

Finding primes $p$ such that $ \dfrac {p+1}2$ and $\dfrac{p-1}4$ are primes

Published on 28 Apr 2014 - 6:38

162

Views

Prove $x$ and $y$ in $y = x^2 + 2$ are prime only for $x = 3$ and $y = 11$?

Published on 28 Apr 2014 - 7:43

606

Views

Is every integer a quadratic residue mod some p?

Published on 25 Mar 2026 - 7:40

31

Views

Find one sum in the function of another sum only

Published on 06 Apr 2026 - 17:14

388

Views

Can diagonalization mod p be generalized to diagonalization mod n?

Published on 27 Mar 2026 - 23:29

182

Views

Probability distribution of count of factors for all numbers

Published on 07 Apr 2026 - 18:53

138

Views

How come if $\ i\ $ not of the following form, then $12i + 5$ must be prime?

Published on 30 Apr 2014 - 7:26

464

Views

Soft Question: What Does "Zero Density" mean in prime numbers?

Published on 27 Mar 2026 - 14:11

310

Views

How come if $\ i\ $ not of the following form, then $12i + 5$ must be prime?

Published on 30 Apr 2014 - 11:27

189

Views

Prime numbers series

Published on 30 Apr 2014 - 15:03

129

Views

finding square $k$ such that $k\mid 2^{k-1} -1$

Published on 30 Apr 2014 - 18:00

3k

Views

What number appears most often in an $n \times n$ multiplication table?

Published on 01 May 2014 - 1:04

361

Views

A question on Zhang's result on prime gaps

Published on 25 Mar 2026 - 13:55

2.2k

Views

Formula for prime counting function

Published on 01 May 2014 - 13:25

List Question

Infinitely many primes in second-order recurrence

Finding primes $p$ such that $ \dfrac {p+1}2$ and $\dfrac{p-1}4$ are primes

Prove $x$ and $y$ in $y = x^2 + 2$ are prime only for $x = 3$ and $y = 11$?

Is every integer a quadratic residue mod some p?

Find one sum in the function of another sum only

Can diagonalization mod p be generalized to diagonalization mod n?

Probability distribution of count of factors for all numbers

How come if $\ i\ $ not of the following form, then $12i + 5$ must be prime?

Soft Question: What Does "Zero Density" mean in prime numbers?

How come if $\ i\ $ not of the following form, then $12i + 5$ must be prime?

Prime numbers series

finding square $k$ such that $k\mid 2^{k-1} -1$

What number appears most often in an $n \times n$ multiplication table?

A question on Zhang's result on prime gaps

Formula for prime counting function

Trending Questions

Popular # Hahtags

Popular Questions