Problem 2323. Pandigital number n°3 (Inspired by Project Euler 32)

Created by Jean-Marie Sainthillier

Solve Later

After Problem 2319 and 2320.

An n-digit number is pandigital if it makes use of all the digits 1 to n exactly ONCE. For example, the 5-digit number 15234, is 1 through 5 pandigital.

The product 7254 is unusual, as the identity, 39 × 186 = 7254, containing multiplicand, multiplier, and product is 1 through 9 pandigital ([391867254]).

Find the sum of all products whose multiplicand/multiplier/product identity can be written as a 1 through n pandigital (n is given in input).

HINT1: Some products can be obtained in more than one way so be sure to only include it once in your sum.

HINT2: All in good time...

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Solution Stats

29 Solutions
16 Solvers

Last Solution submitted on Oct 15, 2019

Last 200 Solutions

Problem Comments

3 Comments

3 Comments

J.R.! Menzinger on 15 May 2014

In the place of "Find the sum of all products whose...", I would say: "Find the number of all products whose..." ;-)

Jan Orwat on 15 May 2014

Why [] instead of 0?

Peter Cook on 6 Sep 2014

Since I have kludged a solution together, can I have a hint?

Solution Comments

Solution 1944616

2 Comments

2 Comments

Augusto Mazzei on 20 Sep 2019

this solution works on my comupter
I see the first test command line is corrupted

%%x=3
:( :( :(

goc3 on 23 Oct 2019 at 23:25

I've fixed that first line in the test suite. Try it again.

Problem Recent Solvers16

Problem Tags

pandigital number project euler