public long GetLastTenDigits(int topower)
{
List <int> digitlist = new List <int>();
for (int i = 1; i <= topower; i++)
{
List <int> liste = DigitsList.ConvertToDigitListe(i);
for (int j = 2; j <= i; j++)
{
liste = DigitsList.Product(liste, MaxDigits, i);
}
digitlist = DigitsList.Sum(digitlist, liste);
}
return(DigitsList.ConvertToNumberLong(digitlist.Take(MaxDigits).ToList()));
}