List questions from factorial

Published on 28 Nov 2011 - 19:28

781

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Finding all positive integer solutions to $(x!)(y!) = x!+y!+z!$

Published on 06 Dec 2011 - 3:58

191

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How to answer to this algebra problem?

Published on 08 Dec 2011 - 22:21

636

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Help with factorials, permutations, and combinations

Published on 16 Dec 2011 - 17:47

1.6k

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are all $n!$ ($n>3$) the difference of two squares?

Published on 17 Dec 2011 - 17:37

199

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Understanding bounds on factorions

Published on 24 Dec 2011 - 11:00

399

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Efficient factorion search in arbitrary base

Published on 25 Dec 2011 - 8:03

327

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$90!$ when divided by $n$, gives an odd number. What can be the minimum and the maximum values of $n$?

Published on 26 Dec 2011 - 12:53

22.8k

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Stirling's formula: proof?

Published on 02 Apr 2026 - 22:21

2k

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Factorial division using Pascal's triangle.

Published on 24 Mar 2026 - 19:15

17.5k

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What is the purpose of Stirling's approximation to a factorial?

Published on 11 Jan 2012 - 14:30

1.6k

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Is a factorial an algebraic function and an elementary function?

Published on 28 Mar 2026 - 2:54

3.2k

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How to prove that $\lim \frac{1}{n} \sqrt[n]{(n+1)(n+2)... 2n} = \frac{4}{e}$

Published on 15 Jan 2012 - 18:13

791

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Closed form for $(p-n)!\pmod{p}$ where $p$ is prime

Published on 17 Jan 2012 - 15:53

11.7k

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Multiply Factorial

Published on 23 Jan 2012 - 13:52

List Question

Proving $\frac{n^n}{3^n} < n! < \frac{n^n}{2^n}$ holds by induction

Finding all positive integer solutions to $(x!)(y!) = x!+y!+z!$

How to answer to this algebra problem?

Help with factorials, permutations, and combinations

are all $n!$ ($n>3$) the difference of two squares?

Understanding bounds on factorions

Efficient factorion search in arbitrary base

$90!$ when divided by $n$, gives an odd number. What can be the minimum and the maximum values of $n$?

Stirling's formula: proof?

Factorial division using Pascal's triangle.

What is the purpose of Stirling's approximation to a factorial?

Is a factorial an algebraic function and an elementary function?

How to prove that $\lim \frac{1}{n} \sqrt[n]{(n+1)(n+2)... 2n} = \frac{4}{e}$

Closed form for $(p-n)!\pmod{p}$ where $p$ is prime

Multiply Factorial

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