digit sum in Danish
digit sum in Danish
itereret tværsum
(mathematics, of a positive integer) The sum of all digits.
reduceret tværsum
(mathematics, of a positive integer) The sum of all digits.
tværsum
(mathematics, of a positive integer) The sum of all digits.
tværsum
(mathematics, of a positive integer) the number obtained when repeatedly applying above described operation until arriving at a single-digit number.