Project Euler Forum

Your number 98765431 is not pandigital according to the definition in the problem statement; having a length of 8 digits it should contain all digits from 1 to 8 exactly once.

ahh ok thanks

What is the criterion for a number to be divisible by 3?

I could just tell you, but that 'rule' is really not hard to google. Give it a try

LilStalker wrote: Wed Aug 16, 2017 11:57 am I could just tell you, but that 'rule' is really not hard to google. Give it a try

Just in case that was in response to my post, I was merely giving @ethereal1m a hint (he was trying 9 digit pandigital primes).

ethereal1m wrote: Tue Aug 08, 2017 5:33 pm I got

Code: Select all

98765431

from my calculation but it's wrong.

This answer is wrong as an 8 digit pandigital number must consist of the digits 1-8.