Question

Leading Digit Distribution of Hexadecimal -> Integer Values

score 112 · Answer 1 · 2017-01-03 23:09:11

112

Views

Leading Digit Distribution of Hexadecimal -> Integer Values

Published on 03 Jan 2017 - 23:09

score 161 · Answer 2 · 2026-03-30 06:46:58

161

Views

Divisibility involving the product (ad+bc)(ac+bd)

Published on 30 Mar 2026 - 6:46

score 96 · Answer 3 · 2026-03-27 00:06:42

96

Views

Properties of $n$ such that $4n+1$ is prime?

Published on 27 Mar 2026 - 0:06

score 875 · Answer 4 · 2017-01-04 10:12:53

875

Views

Sum of digits of a number

Published on 04 Jan 2017 - 10:12

score 65 · Answer 5 · 2017-01-05 02:38:33

65

Views

Find all pairs of positive integers $(m, n)$ such that $\sum_\limits{k=0}^{m} x^k \mid \sum_\limits{k=0}^{m} x^{kn}$

Published on 05 Jan 2017 - 2:38

score 38 · Answer 6 · 2017-01-06 06:54:50

38

Views

$\frac{a^{n \tiny\frac{n-2}{2}} - 1}{(n-1)(n+1)} \in \Bbb{Z}$ infinitely often.

Published on 06 Jan 2017 - 6:54

score 51 · Answer 7 · 2017-01-06 17:04:35

51

Views

Vectors related by an integer matrix. Is there something like orthogonal transformations in a subspace?

Published on 06 Jan 2017 - 17:04

score 65 · Answer 8 · 2017-01-10 03:59:34

65

Views

Can we write $e^x$ as a sum of integer factors of $e$ to $e^{x-1}$?

Published on 10 Jan 2017 - 3:59

score 164 · Answer 9 · 2017-01-10 05:37:31

164

Views

Determining whether polynomial will produce even, odd, or both even and odd values for an integer argument

Published on 10 Jan 2017 - 5:37

score 49 · Answer 10 · 2026-03-30 17:37:33

49

Views

How to tackle this question related to gcd.

Published on 30 Mar 2026 - 17:37

score 102 · Answer 11 · 2017-01-12 05:05:46

102

Views

If $a$ and $b$ are relatively prime to each other then each factor of $a^2 + b^2$ is the sum of two squares.

Published on 12 Jan 2017 - 5:05

score 444 · Answer 12 · 2026-03-30 06:45:32

444

Views

If $a^a$ divides $b^b$, then $a$ divides $b$?

Published on 30 Mar 2026 - 6:45

score 135 · Answer 13 · 2017-01-16 22:14:06

135

Views

Given a word, how to tell whether it is a Roman numeral?

Published on 16 Jan 2017 - 22:14

score 255 · Answer 14 · 2017-01-16 23:15:39

255

Views

Find nearest whole integer(s) on function

Published on 16 Jan 2017 - 23:15

score 37 · Answer 15 · 2017-01-17 05:13:53

37

Views

Prove: $b|a \iff A \subseteq B$

Published on 17 Jan 2017 - 5:13

List Question

Leading Digit Distribution of Hexadecimal -> Integer Values

Divisibility involving the product (ad+bc)(ac+bd)

Properties of $n$ such that $4n+1$ is prime?

Sum of digits of a number

Find all pairs of positive integers $(m, n)$ such that $\sum_\limits{k=0}^{m} x^k \mid \sum_\limits{k=0}^{m} x^{kn}$

$\frac{a^{n \tiny\frac{n-2}{2}} - 1}{(n-1)(n+1)} \in \Bbb{Z}$ infinitely often.

Vectors related by an integer matrix. Is there something like orthogonal transformations in a subspace?

Can we write $e^x$ as a sum of integer factors of $e$ to $e^{x-1}$?

Determining whether polynomial will produce even, odd, or both even and odd values for an integer argument

How to tackle this question related to gcd.

If $a$ and $b$ are relatively prime to each other then each factor of $a^2 + b^2$ is the sum of two squares.

If $a^a$ divides $b^b$, then $a$ divides $b$?

Given a word, how to tell whether it is a Roman numeral?

Find nearest whole integer(s) on function

Prove: $b|a \iff A \subseteq B$

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