All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers
Reverso (Posted on 2014-02-27) Difficulty: 3 of 5
Let f(n) denote the largest prime factor of n which is not a palindrome.

Find all the numbers n (below 20000) such that the sum of the factorials of the digits of n is equal to f(n) reversed.

Example: 2105 = 5*421 and 2!+1!+0!+5! = 124.

No Solution Yet Submitted by Ady TZIDON    
No Rating

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Solutioncomputer solutionCharlie2014-02-27 17:05:19
SolutionSolutiontomarken2014-02-27 15:50:36
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (1)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information