9, 99, 999 are three.
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8, 10, and 12 are 3 composite numbers. They are composite because they ahve more than 2 factors.
There are no three composite numbers that multiply to 1001.
Prime numbers have only two factors. Composite numbers have more than two.
Prime numbers have two factors. Composite numbers have more than two.
1 is special 2 prime 3 prime 4 composite 5 prime 6 composite 7 prime 8 composite 9 composite 10 composite 11 prime 12 composite ext.