List questions from elementary-number-theory

Published on 15 Apr 2026 - 19:52

154

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A possible proof of Fermat's Little Theorem

Published on 11 Apr 2026 - 4:18

1.6k

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solutions to $x^n\equiv a\pmod{p}$

Published on 13 Apr 2026 - 6:57

304

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Find the last two digits of $1717^{1717}$

Published on 11 Apr 2026 - 16:14

111

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Explain this n-modulus relation in Pythagorean triplets {a,a+n,c}

Published on 15 Apr 2026 - 23:14

706

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When a number is divided by $13$, the remainder is $11$. When the same number is divided by $17$, then remainder is $9$. What is the number?

Published on 14 Apr 2026 - 18:37

81

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Please comment on my primitive reasoning behind the value of $0^0$

Published on 14 Apr 2026 - 15:08

69

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A statement about modulo property from The Art of Computer Programming

Published on 13 Apr 2026 - 19:03

61

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Counting the number of solutions to an equation involving floor and ceiling function

Published on 11 Apr 2026 - 14:18

228

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Find smallest prime $p$ such that all primes $q < 40$ are quadratic non-residues $\pmod p$

Published on 17 Apr 2026 - 13:55

97

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Proof that number ending in $66$ or $06$ is congruent to $2 \text{ mod } 4$

Published on 19 Apr 2026 - 16:42

35

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Equality in Z_n

Published on 12 Apr 2026 - 13:14

1.2k

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Formula for sum of divisors

Published on 11 Apr 2026 - 6:39

719

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The set of integers $n$ expressible as $n=x^2+xy+y^2$

Published on 25 Apr 2026 - 23:57

509

Views

For which integers $D$ does $\left(\frac{-D}{p}\right)=1$ imply $p=x^2+Dy^2$?

Published on 17 Apr 2026 - 10:35

List Question

Find $n$ such that $n| 3^n +1$

A possible proof of Fermat's Little Theorem

solutions to $x^n\equiv a\pmod{p}$

Find the last two digits of $1717^{1717}$

Explain this n-modulus relation in Pythagorean triplets {a,a+n,c}

When a number is divided by $13$, the remainder is $11$. When the same number is divided by $17$, then remainder is $9$. What is the number?

Please comment on my primitive reasoning behind the value of $0^0$

A statement about modulo property from The Art of Computer Programming

Counting the number of solutions to an equation involving floor and ceiling function

Find smallest prime $p$ such that all primes $q < 40$ are quadratic non-residues $\pmod p$

Proof that number ending in $66$ or $06$ is congruent to $2 \text{ mod } 4$

Equality in Z_n

Formula for sum of divisors

The set of integers $n$ expressible as $n=x^2+xy+y^2$

For which integers $D$ does $\left(\frac{-D}{p}\right)=1$ imply $p=x^2+Dy^2$?

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