Math. Obs. rare. [a. L. factus (? sc. numerus), pa. pple. masc. of facère to make.] The product of two or more numbers or expressions; = FACTUM 3.
1669. Newton, in Rigaud Cor. Sci. Men (1841), II. 282. The factus of their denominators will be b5 + 10b4 + 35b3 + 50bb + 24b.
