In a word, no. Caffeine is an integral part of the tea leave's chemistry. Due to matcha's powder form you cannot separate it as you would with regular tea leaves. Decaf green tea is achievable by either harsh chemical processes which are damaging to the teas quality.
A composite factor is a factor that is a composite number, asopposed to a prime factor which is a factor that is a prime number. A factor is a number or quantity that when multiplied with another produces a given number or expression.
Factors are all the integers that divide evenly into another integer (whole number). They are what you get when you divide. The Greatest Common Factor is the largest integer that will divide evenly into any two or more integers. For example, let's take 24 and 30.