The present invention provides a computer-implemented method for multiplying two large multiplicands. The method includes generating a plurality of partial products by multiplying each digit of the first multiplicand with each digit of the second multiplicand. The resulting partial products have a least significant digit and a most significant digit. The method further includes adding each of the most significant digits to a first array and adding each of the least significant digits to a second array. The method then includes adding the first array to the second array, wherein the result is the product of the two original multiplicands.