List questions from prime-numbers

Published on 26 Mar 2026 - 12:46

87

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For $p$ a prime larger than $2k+2$, is it possible that $p^2$ divides $B_{2k}$?

Published on 25 Mar 2026 - 19:06

94

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inverse of $y=\frac{x}{\log{x}}$?

Published on 27 Mar 2026 - 8:57

680

Views

Solution of this Diophantine Equation

Published on 28 Mar 2026 - 2:22

121

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Number of rational numbers in $A$

Published on 28 Mar 2019 - 19:17

799

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Finding the sum of the reciprocals of the positive divisors of a number

Published on 25 Mar 2026 - 12:17

155

Views

Proving $\prod_{p\in \pi(m+1,2m)}p \leq {2m \choose m} $

Published on 29 Mar 2019 - 11:31

73

Views

Determine all positive integers $(a,n)$ such that $(a-1)!+1=a^n$

Published on 29 Mar 2019 - 12:54

42

Views

Is there a prime number $p$ such that : $p\bmod n =1 $ for $n <10$? and if yes , Are there infinity of them?

Published on 26 Mar 2026 - 6:08

168

Views

Finding quadratic residues without Legendre symbols

Published on 26 Mar 2026 - 12:52

102

Views

prime numbers in an interval, binomial coefficients

Published on 29 Mar 2019 - 16:17

70

Views

Given a pair of primes $g < p$, is there an efficient test if $g$ is a generator of the group $\mathbb{Z}_p^*$?

Published on 27 Mar 2026 - 17:06

91

Views

When is $2(m)(m+1)+1$ is a perfect square?

Published on 30 Mar 2019 - 19:51

71

Views

Generalise of $\sigma_k(P_a^j)+\sigma_k(P^{j+1}_a)?$

Published on 25 Mar 2026 - 12:20

61

Views

Can we expect infinite many primes $p$ equal to the start of $frac(\sqrt{p})$?

Published on 25 Mar 2026 - 17:20

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Question about periodicity in Fibonacci numbers

For $p$ a prime larger than $2k+2$, is it possible that $p^2$ divides $B_{2k}$?

inverse of $y=\frac{x}{\log{x}}$?

Solution of this Diophantine Equation

Number of rational numbers in $A$

Finding the sum of the reciprocals of the positive divisors of a number

Proving $\prod_{p\in \pi(m+1,2m)}p \leq {2m \choose m} $

Determine all positive integers $(a,n)$ such that $(a-1)!+1=a^n$

Is there a prime number $p$ such that : $p\bmod n =1 $ for $n <10$? and if yes , Are there infinity of them?

Finding quadratic residues without Legendre symbols

prime numbers in an interval, binomial coefficients

Given a pair of primes $g < p$, is there an efficient test if $g$ is a generator of the group $\mathbb{Z}_p^*$?

When is $2(m)(m+1)+1$ is a perfect square?

Generalise of $\sigma_k(P_a^j)+\sigma_k(P^{j+1}_a)?$

Can we expect infinite many primes $p$ equal to the start of $frac(\sqrt{p})$?

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