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.
A prime number has no other factor other than #1# and itself. For example, #5# has only #{1,5}# as its factor. Similar is the position for #13#, #43#, #79#, #101#, #223# etc. Composite numbers on the other hand are those who have factors other than one and itself like #6#, #39#, #87#, #553#, #667# etc. as factors of #6# are #{1,2,3,6}#, that of #39# are #{1,3,13,39}#, that of #87# are #{1,3,29,87}#, that of #553# are #{1,7,79,553}# and that of #667# are #{1,23,29,667}#.