List questions from elementary-number-theory

Published on 11 Apr 2026 - 20:42

85

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Proof verifiation: $\log_a b$ is either an integer or irrational number

Published on 16 Apr 2026 - 7:02

43

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Mod of a Mod, solving $x\equiv 2 \pmod{3\pmod{4}}$

Published on 17 Apr 2026 - 6:05

167

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Prove $((u \mod N) \cdot (v \mod N) ) \mod N=(u \cdot v) \mod N?$

Published on 16 Apr 2026 - 1:29

2.8k

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Prove that the quantity is an integer

Published on 13 Apr 2026 - 2:24

111

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Sum of elements of order dividing a divisor of $p-1$ in the group of units of $\mathbb{Z}/p\mathbb{Z}$

Published on 14 Apr 2026 - 3:39

88

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Cyclic Quintic Polynomial Family

Published on 16 Apr 2026 - 0:54

78

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I have no idea how to prove this

Published on 14 Apr 2026 - 7:36

64

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Finding a couple of numbers which satisfy $(a + b)|(a + c)$ and $(a + b)|(2c)$ using a "systematic" method

Published on 15 Apr 2026 - 23:35

682

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Understanding a proof that $17\mid (2x+3y)$ iff $17\mid(9x +5y)$

Published on 13 Apr 2026 - 2:20

83

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Proof by Induction - Am I doing this correctly?

Published on 12 Apr 2026 - 21:16

59

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Divisibility of $a^x - 1$

Published on 13 Apr 2026 - 3:56

65

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$h\mid (3a + 5b)$, prove $h\mid a$ and $h\mid b$

Published on 13 Apr 2026 - 12:27

35

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Sums and differences of factors

Published on 12 Apr 2026 - 13:51

269

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Can $pk+1$ divide $(p-k)^2$?

Published on 11 Apr 2026 - 14:59

List Question

First year college question on divisibility of integers

Proof verifiation: $\log_a b$ is either an integer or irrational number

Mod of a Mod, solving $x\equiv 2 \pmod{3\pmod{4}}$

Prove $((u \mod N) \cdot (v \mod N) ) \mod N=(u \cdot v) \mod N?$

Prove that the quantity is an integer

Sum of elements of order dividing a divisor of $p-1$ in the group of units of $\mathbb{Z}/p\mathbb{Z}$

Cyclic Quintic Polynomial Family

I have no idea how to prove this

Finding a couple of numbers which satisfy $(a + b)|(a + c)$ and $(a + b)|(2c)$ using a "systematic" method

Understanding a proof that $17\mid (2x+3y)$ iff $17\mid(9x +5y)$

Proof by Induction - Am I doing this correctly?

Divisibility of $a^x - 1$

$h\mid (3a + 5b)$, prove $h\mid a$ and $h\mid b$

Sums and differences of factors

Can $pk+1$ divide $(p-k)^2$?

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