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.
Unlike a prime number which has only two factors one and the number itself, a composite number has various other numbers as its factors. Example: 4, 6, 8, 10, 12, 14...... are composite numbers because these numbers are composed of the other numbers. 0 and 1 are neither prime nor composite numbers.