Question

Find the smallest possible checksum

score 629 · Answer 1 · 2026-04-13 22:25:16

629

Views

Find the smallest possible checksum

Published on 13 Apr 2026 - 22:25

score 74 · Answer 2 · 2026-04-15 20:55:09

74

Views

Efficient Reduction of $q\mod k2^n+1$?

Published on 15 Apr 2026 - 20:55

score 52 · Answer 3 · 2026-04-15 08:01:53

52

Views

Having trouble with Lemma 3 of Hanson's proof that $\prod\limits_{p^a \le n} p^a < 3^n$

Published on 15 Apr 2026 - 8:01

score 245 · Answer 4 · 2026-04-16 19:11:45

245

Views

Showing that $\sum_{x \in \mathbb{F}_p} \left(\frac{x^2-1}{p}\right) = -1$, where $\left(\frac{x}{p}\right)$ is the Legendre symbol

Published on 16 Apr 2026 - 19:11

score 2.3k · Answer 5 · 2026-03-27 02:06:52

2.3k

Views

Any relationship between $a\bmod b$ and $a\bmod c$?

Published on 27 Mar 2026 - 2:06

score 83 · Answer 6 · 2026-04-16 21:29:11

83

Views

What's the first non-planar graph of the first $n$ numbers where edges show divisibility?

Published on 16 Apr 2026 - 21:29

score 358 · Answer 7 · 2026-03-25 07:44:33

358

Views

If $m > 0$, fix a reduced residue system $r_{1}, r_2, \dotsc, r_{\varphi(m)} $ mod $ m$. Let $x=r_1+r_2+\dotsb+r_{\varphi(m)}$. What is $x$ mod $m$?

Published on 25 Mar 2026 - 7:44

score 291 · Answer 8 · 2026-04-30 21:14:35

291

Views

Show that infinitely many positive integer pairs $(m,n)$ exist s.t $\frac{m+1}{n}+\frac{n+1}{m} \in \mathbb{N}$

Published on 30 Apr 2026 - 21:14

score 87 · Answer 9 · 2026-04-17 13:51:43

87

Views

$f(x) = 2^\alpha x^2+2^\beta x - 2^\gamma=y^2$

Published on 17 Apr 2026 - 13:51

score 112 · Answer 10 · 2026-04-12 10:15:24

112

Views

How to convert normal number to a number with power.

Published on 12 Apr 2026 - 10:15

score 59 · Answer 11 · 2026-04-13 20:26:27

59

Views

When was the first appearance of the abbreviation RSA?

Published on 13 Apr 2026 - 20:26

score 45 · Answer 12 · 2026-03-25 06:12:51

45

Views

Question on the final step of Hanson's proof that $\prod\limits_{p^a \le n}p^a < 3^n$

Published on 25 Mar 2026 - 6:12

score 209 · Answer 13 · 2026-04-10 19:29:22

209

Views

The sum of product pairs of integers prime to $n$

Published on 10 Apr 2026 - 19:29

score 108 · Answer 14 · 2026-04-15 01:00:37

108

Views

Prove there exist infinite subsequences of $x_{n+1} = x_n + 2^n$ all members of which are divisible by $3$

Published on 15 Apr 2026 - 1:00

score 443 · Answer 15 · 2026-04-12 19:23:40

443

Views

Invertible elements $\mathbb{Z} / p^2 \mathbb{Z}$

Published on 12 Apr 2026 - 19:23

List Question

Find the smallest possible checksum

Efficient Reduction of $q\mod k2^n+1$?

Having trouble with Lemma 3 of Hanson's proof that $\prod\limits_{p^a \le n} p^a < 3^n$

Showing that $\sum_{x \in \mathbb{F}_p} \left(\frac{x^2-1}{p}\right) = -1$, where $\left(\frac{x}{p}\right)$ is the Legendre symbol

Any relationship between $a\bmod b$ and $a\bmod c$?

What's the first non-planar graph of the first $n$ numbers where edges show divisibility?

If $m > 0$, fix a reduced residue system $r_{1}, r_2, \dotsc, r_{\varphi(m)} $ mod $ m$. Let $x=r_1+r_2+\dotsb+r_{\varphi(m)}$. What is $x$ mod $m$?

Show that infinitely many positive integer pairs $(m,n)$ exist s.t $\frac{m+1}{n}+\frac{n+1}{m} \in \mathbb{N}$

$f(x) = 2^\alpha x^2+2^\beta x - 2^\gamma=y^2$

How to convert normal number to a number with power.

When was the first appearance of the abbreviation RSA?

Question on the final step of Hanson's proof that $\prod\limits_{p^a \le n}p^a < 3^n$

The sum of product pairs of integers prime to $n$

Prove there exist infinite subsequences of $x_{n+1} = x_n + 2^n$ all members of which are divisible by $3$

Invertible elements $\mathbb{Z} / p^2 \mathbb{Z}$

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