List questions from gcd-and-lcm

Published on 02 Jun 2017 - 8:31

676

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Why Do These GCD, LCM, Modulo, And Mean Graphs Look The Way They Are?

Published on 24 Feb 2026 - 7:04

584

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Estimating the number of integers less than $m$ that are relatively prime to $p_n\#$

Published on 25 Mar 2026 - 15:42

352

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Proof that $\gcd(a,c)=\gcd(b,c)$ if $ab+c=a^2c-b+a$

Published on 06 Jun 2017 - 23:20

85

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Show that $\gcd\left(n^2+20,(n+1)^2+20\right)$ divides $81$ for all natural number $n.$

Published on 08 Jun 2017 - 13:52

2.5k

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Why does the LCM long division method work?

Published on 13 Jun 2017 - 7:21

1.3k

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$ d_1,d_2\mid n\iff {\rm lcm}(d_1,d_2)\mid n\,\ $ [LCM Universal Property or Definition]

Published on 14 Jun 2017 - 9:59

271

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GCD Inequality with products and exponents

Published on 14 Jun 2017 - 17:38

235

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GCD of a Huge Number

Published on 15 Jun 2017 - 13:03

83

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Find $(x + 1)^{−3}$ in $\mathbb{Z}_2[x]/(x^5 + x^4 + 1)$

Published on 28 Mar 2026 - 20:41

273

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Are $\langle X-1\rangle $ and $\langle X+1\rangle $ comaximal in $\Bbb Z[X]$?

Published on 17 Jun 2017 - 11:15

1.4k

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What is the gcd of x+1 and x-1?

Published on 17 Jun 2017 - 20:52

151

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GCD of $X^4+5X^3+3X^2+X$ and $X^2+1$ ( Euclidean Algorithm + Finding the inverse of the polynomial)

Published on 28 Mar 2026 - 22:13

64

Views

Find high common factor of all possible $n$

Published on 19 Jun 2017 - 4:52

138

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Factors and multiples

Published on 19 Jun 2017 - 7:44

List Question

Modular square root of product of numbers

Why Do These GCD, LCM, Modulo, And Mean Graphs Look The Way They Are?

Estimating the number of integers less than $m$ that are relatively prime to $p_n\#$

Proof that $\gcd(a,c)=\gcd(b,c)$ if $ab+c=a^2c-b+a$

Show that $\gcd\left(n^2+20,(n+1)^2+20\right)$ divides $81$ for all natural number $n.$

Why does the LCM long division method work?

$ d_1,d_2\mid n\iff {\rm lcm}(d_1,d_2)\mid n\,\ $ [LCM Universal Property or Definition]

GCD Inequality with products and exponents

GCD of a Huge Number

Find $(x + 1)^{−3}$ in $\mathbb{Z}_2[x]/(x^5 + x^4 + 1)$

Are $\langle X-1\rangle $ and $\langle X+1\rangle $ comaximal in $\Bbb Z[X]$?

What is the gcd of x+1 and x-1?

GCD of $X^4+5X^3+3X^2+X$ and $X^2+1$ ( Euclidean Algorithm + Finding the inverse of the polynomial)

Find high common factor of all possible $n$

Factors and multiples

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