Problems

1 – 24 of 24

Problem Title Likes Solvers Difficulty

Problem 2492. Factorions: Numbers that equal the sum of the factorials of their digits

Created by: Peter Cook

Tags factorial, factorion

Problem 45184. factorial

Created by: Sinh Luong

Tags calculate, factorial, x!

Problem 46648. Factorial

Created by: Payam Morsali

Tags math, linear algebra, factorial

Problem 2047. Find Factrorial without using built-in function

Created by: Muhammad Sarwar

Tags factorial, fact

129

Problem 45189. Double Factorial

Created by: Mehmet OZC

Tags number theory, factorial, double factorial

Problem 45770. Approximate functions 1 (★★★)

Created by: Anirban Pal

Tags factorial, function sum

Problem 42267. factorial of a number x

Created by: vinayak patil

Tags factorial

327

Problem 2114. Factorial Numbers

Created by: Petr Dostal

Tags matlab 101, basic matlab, factorial

394

Problem 43968. Concatenated roots

Created by: Daniel Pereira

Tags series, factorial, roots

Problem 44068. The number of trailing zero digit of a factorial

Created by: Jihye Sofia Seo

Tags integer, number theory, factorial

Problem 1532. SLP Calculation

Created by: Richard Zapor

Tags cell array, str2num, sprintf

Problem 51560. Convert a number from factorial notation to base 10

Created by: ChrisR

Tags factorial, expansion, dudley 13.19

Problem 51950. Find the smallest integer m such that n divides m!

Created by: ChrisR

Tags sequence, factorial, divisibility

Problem 44071. Smallest n, for n! to have m trailing zero digits

Created by: Jihye Sofia Seo

Tags integer, factorial, factorisation

Problem 55345. Easy Sequences 68: Factorial Rectangles

Created by: Ramon Villamangca

Tags easy, geometry, sequence

Problem 2325. GJam 2014 Rd 1c: Reordering Train Cars (Large)

Created by: Richard Zapor

Tags permutations, factorial, gjam

Problem 45251. Last non-zero digit

Created by: Asif Newaz

Tags number, factorial

Problem 56418. Easy Sequences 78: Trailing Zeros of Factorial Numbers at any Base

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 51565. Convert a number from base 10 to factorial notation

Created by: ChrisR

Tags number theory, factorial, expansion

Problem 52609. Easy Sequences 11: Factorial Digits without Trailing Zeros

Created by: Ramon Villamangca

Tags easy, sequences, number theory

Problem 53009. Easy Sequences 48: Prime Big Omega of Factorial Sequence

Created by: Ramon Villamangca

Tags easy, primes, number theory

1 – 24 of 24

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Problem Groups

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Problem Groups

Problems

Problem 2492. Factorions: Numbers that equal the sum of the factorials of their digits

Problem 45184. factorial

Problem 46648. Factorial

Problem 2047. Find Factrorial without using built-in function

Problem 45189. Double Factorial

Problem 45770. Approximate functions 1 (★★★)

Problem 42267. factorial of a number x

Problem 1854. Factorial: Unlimited Size : java.math

Problem 45543. Find the remainder with the factorial of PRIMES?

Problem 44067. The last non-zero digit of a factorial

Problem 2114. Factorial Numbers

Problem 43968. Concatenated roots

Problem 44068. The number of trailing zero digit of a factorial

Problem 1532. SLP Calculation

Problem 51560. Convert a number from factorial notation to base 10

Problem 51950. Find the smallest integer m such that n divides m!

Problem 44071. Smallest n, for n! to have m trailing zero digits

Problem 55345. Easy Sequences 68: Factorial Rectangles

Problem 2325. GJam 2014 Rd 1c: Reordering Train Cars (Large)

Problem 45251. Last non-zero digit

Problem 56418. Easy Sequences 78: Trailing Zeros of Factorial Numbers at any Base

Problem 51565. Convert a number from base 10 to factorial notation

Problem 52609. Easy Sequences 11: Factorial Digits without Trailing Zeros

Problem 53009. Easy Sequences 48: Prime Big Omega of Factorial Sequence