Question

What is the $GCD(2^{32}-2^{24}+2^{16}-2^8+1, 2^8+1)$?

score 104 · Answer 1 · 2026-04-17 11:22:38

104

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What is the $GCD(2^{32}-2^{24}+2^{16}-2^8+1, 2^8+1)$?

Published on 17 Apr 2026 - 11:22

score 105 · Answer 2 · 2026-04-14 07:10:23

105

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Conditions for computing $n$ given $\varphi\left(n\right)$

Published on 14 Apr 2026 - 7:10

score 43 · Answer 3 · 2026-04-15 13:42:44

Suppose $\gcd(2^5\times3^4 \times5^4 \times7 \times11, x) = d$ where $x$ and $d$ are integers. How many possible values of $d$ are there?

score 1.4k · Answer 4 · 2026-04-12 12:02:58

1.4k

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Can the sum of two distinct factorizations of a number be equal?

Published on 12 Apr 2026 - 12:02

score 282 · Answer 5 · 2026-04-17 02:56:01

282

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Find solutions to $\varphi\left(n\right)=2^{32}$

Published on 17 Apr 2026 - 2:56

score 106 · Answer 6 · 2026-04-28 12:33:28

106

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Is there a formula for calculating the sum of all products of $p$ different integers $\le n$?

Published on 28 Apr 2026 - 12:33

score 49 · Answer 7 · 2026-04-13 01:17:20

49

Views

Finding $p$-primes which a congruential modulo $p$ has a solution.

Published on 13 Apr 2026 - 1:17

score 102 · Answer 8 · 2026-04-14 17:05:43

102

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If $\gcd(u,m)=1$ then there exists an integer $k_1\in\Bbb Z$ such that $\gcd(mk_1+u,mk)=1$

Published on 14 Apr 2026 - 17:05

score 1.7k · Answer 9 · 2026-04-16 05:08:51

1.7k

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Does this pattern continue $\lfloor\sqrt{44}\rfloor=6, \lfloor\sqrt{4444}\rfloor=66,\dots$?

Published on 16 Apr 2026 - 5:08

score 2k · Answer 10 · 2026-04-13 14:33:53

2k

Views

An extension of the Four 4's game

Published on 13 Apr 2026 - 14:33

score 433 · Answer 11 · 2026-04-17 03:21:20

433

Views

In the Diophantine equation, 5x + 17y = c

Published on 17 Apr 2026 - 3:21

score 196 · Answer 12 · 2026-04-15 07:21:41

196

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Number of elements with order divisible by certain cyclic subgroups order in $(\mathbb{Z}/\mathbb{Z}_n)^*$

Published on 15 Apr 2026 - 7:21

score 73 · Answer 13 · 2026-04-14 17:16:56

73

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Integer Roots of $x(a-1)-x(a^2-1)=a^2+a$

Published on 14 Apr 2026 - 17:16

score 218 · Answer 14 · 2026-04-16 10:38:15

218

Views

Primitive Pythagorean Triples & (Semi-)Prime Numbers

Published on 16 Apr 2026 - 10:38

score 51 · Answer 15 · 2026-04-12 12:25:43

51

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A modular arithmetic question

Published on 12 Apr 2026 - 12:25

List Question

What is the $GCD(2^{32}-2^{24}+2^{16}-2^8+1, 2^8+1)$?

Conditions for computing $n$ given $\varphi\left(n\right)$

Suppose $\gcd(2^5\times3^4 \times5^4 \times7 \times11, x) = d$ where $x$ and $d$ are integers. How many possible values of $d$ are there?

Can the sum of two distinct factorizations of a number be equal?

Find solutions to $\varphi\left(n\right)=2^{32}$

Is there a formula for calculating the sum of all products of $p$ different integers $\le n$?

Finding $p$-primes which a congruential modulo $p$ has a solution.

If $\gcd(u,m)=1$ then there exists an integer $k_1\in\Bbb Z$ such that $\gcd(mk_1+u,mk)=1$

Does this pattern continue $\lfloor\sqrt{44}\rfloor=6, \lfloor\sqrt{4444}\rfloor=66,\dots$?

An extension of the Four 4's game

In the Diophantine equation, 5x + 17y = c

Number of elements with order divisible by certain cyclic subgroups order in $(\mathbb{Z}/\mathbb{Z}_n)^*$

Integer Roots of $x(a-1)-x(a^2-1)=a^2+a$

Primitive Pythagorean Triples & (Semi-)Prime Numbers

A modular arithmetic question

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