Short Answer

Procedural Rule for the Prime Factors Method

A logistics coordinator is using the prime factors method to find the Least Common Multiple (LCM) to synchronize two different delivery cycles. After the coordinator has written the prime factorization for both numbers and aligned matching primes vertically in columns, what is the mandatory rule for 'bringing down' factors from these columns, and why does this rule ensure the result is the 'least' common multiple?

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Updated 2026-04-18

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