equivalent-binary-digit factor: the average number of binary digits needed to express one radix digit in a numeration system that is not binary; on the average a number that can be expressed in N decimal digits takes 3.3N binary digits
divisor: one of two or more integers that can be exactly divided into another integer
infiltration: a process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without detection)