List questions from number-theory

Published on 16 Apr 2026 - 7:34

197

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Does the order of $2$ in $Z_p$ divide the order of $2$ in $Z_n$?

Published on 16 May 2026 - 8:21

171

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Is the function $f(n)=\varphi(n)+\varphi(n+1)-n$ surjective?

Published on 17 May 2026 - 3:38

166

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Interesting missing proof (Prime Number Theorem)

Published on 09 Apr 2026 - 18:21

988

Views

Bézout's Identity for Polynomial Ring

Published on 14 Apr 2026 - 6:34

64

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Largest number which leaves equal remainder with 3 given numbers

Published on 13 Apr 2026 - 7:24

284

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All interval sequences mod integers

Published on 17 Apr 2026 - 7:03

83

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Which primes divide $x^2-5$?

Published on 14 May 2026 - 6:32

528

Views

The number of prime pairs of $x^2-2y^2=1$

Published on 15 Apr 2026 - 22:32

222

Views

Stapled sequences- set of consecutive positive integers such that no one of them is relatively prime with all of the others

Published on 09 Apr 2026 - 5:53

93

Views

Level Lowering obstructions

Published on 10 May 2026 - 17:49

71

Views

Find all $n$ such that the following is prime

Published on 16 May 2026 - 8:18

554

Views

Sum of primes in square

Published on 15 Apr 2026 - 6:30

72

Views

coefficients in the expansion of multivariable expression

Published on 10 May 2026 - 19:54

83

Views

How to solve $a^3+2b^3+6c^3=380$ for $a, b, c \in \mathbb{Z}$

Published on 13 Apr 2026 - 21:11

List Question

Thm: If n is an odd pseudo prime number, then $M_n = 2^n-1$ is a larger one.

Does the order of $2$ in $Z_p$ divide the order of $2$ in $Z_n$?

Is the function $f(n)=\varphi(n)+\varphi(n+1)-n$ surjective?

Interesting missing proof (Prime Number Theorem)

Bézout's Identity for Polynomial Ring

Largest number which leaves equal remainder with 3 given numbers

All interval sequences mod integers

Which primes divide $x^2-5$?

The number of prime pairs of $x^2-2y^2=1$

Stapled sequences- set of consecutive positive integers such that no one of them is relatively prime with all of the others

Level Lowering obstructions

Find all $n$ such that the following is prime

Sum of primes in square

coefficients in the expansion of multivariable expression

How to solve $a^3+2b^3+6c^3=380$ for $a, b, c \in \mathbb{Z}$

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