List questions from factorial

Published on 25 Mar 2026 - 5:59

758

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How to find the nearest factorial to a number

Published on 04 Feb 2019 - 10:13

136

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Evaluate the following limit: $\lim\limits_{ n\to\infty}\frac{(2n)!\sqrt n}{2^{2n}\cdot (n!)^{2}}$

Published on 04 Feb 2019 - 18:55

58

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Storing numbers in an efficient way in computer.

Published on 06 Feb 2019 - 19:53

125

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Proof for $\sum_{r=1}^{n}r(r!)=\sum_{r=1}^{n}[(r+1)!-r!]=(n+1)!-1$

Published on 07 Feb 2019 - 18:25

49

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Does $N! = 2^m$ hold for any integer values of $N$ and $m$?

Published on 08 Feb 2019 - 18:02

134

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A lower bound for de Polignac's formula

Published on 10 Feb 2019 - 21:24

53

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How to complete this proof involving factorials

Published on 11 Feb 2019 - 15:25

946

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can we perform modulo operator on a fraction on both of it's numerator and denominator?

Published on 12 Feb 2019 - 16:44

133

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$N! \pmod{P}$ (huge numbers)

Published on 14 Feb 2019 - 13:32

73

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Finding the last non-zero digit of $n!$ in $O(1)$

Published on 15 Feb 2019 - 6:14

27

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recursive relation on derangement of objects

Published on 16 Feb 2019 - 23:39

74

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What's $\frac{(2n)!}{n!}$ equal to?

Published on 17 Feb 2019 - 5:35

34

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Solutions for $n$? Use Stirling approximations if needed

Published on 18 Feb 2019 - 15:03

78

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Can you propose a theorem from these congruences?

Published on 18 Feb 2019 - 15:27

List Question

Double-precision algorithm for inverse log gamma or log factorial?

How to find the nearest factorial to a number

Evaluate the following limit: $\lim\limits_{ n\to\infty}\frac{(2n)!\sqrt n}{2^{2n}\cdot (n!)^{2}}$

Storing numbers in an efficient way in computer.

Proof for $\sum_{r=1}^{n}r(r!)=\sum_{r=1}^{n}[(r+1)!-r!]=(n+1)!-1$

Does $N! = 2^m$ hold for any integer values of $N$ and $m$?

A lower bound for de Polignac's formula

How to complete this proof involving factorials

can we perform modulo operator on a fraction on both of it's numerator and denominator?

$N! \pmod{P}$ (huge numbers)

Finding the last non-zero digit of $n!$ in $O(1)$

recursive relation on derangement of objects

What's $\frac{(2n)!}{n!}$ equal to?

Solutions for $n$? Use Stirling approximations if needed

Can you propose a theorem from these congruences?

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