/*
*
* Let d1 be the 1st digit, d2 be the 2nd digit, and so on. In this way, we note the following:
* d2d3d4=406 is divisible by 2
* d3d4d5=063 is divisible by 3
* d4d5d6=635 is divisible by 5
* d5d6d7=357 is divisible by 7
* d6d7d8=572 is divisible by 11
* d7d8d9=728 is divisible by 13
* d8d9d10=289 is divisible by 17
*/
public bool HasSubstringdivisibility(long number)
{
var digitListe = DigitsList.ConvertToDigitListe(number);
digitListe.Reverse();
var digitArray = digitListe.ToArray();
int[] dividors = { 2, 3, 5, 7, 11, 13, 17 };
for (int i = 0; i < dividors.Length; i++)
{
int value = DigitsList.ConvertToNumberHighesFirst(digitArray.Skip(i + 1).Take(3).ToArray());
if (value % dividors[i] != 0)
{
return(false);
}
}
return(true);
}