2 and 3 are prime numbers, so it means that the greatest common factor is:
G.C.M(2;3)=2*3=6
The highest common multiple (HCM) of 2 and 3 does not exist as multiples go on infinitely. However, the least common multiple (LCM), or the smallest common multiple, of 2 and 3 is 6. This means that while we can find many common multiples, there is no upper limit to them.
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