What is the LCM of 21 and 684?
The LCM of 21 and 684 is 4788.
Steps to find LCM
- Find the prime factorization of 21
21 = 3 × 7 - Find the prime factorization of 684
684 = 2 × 2 × 3 × 3 × 19 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 3 × 3 × 7 × 19 - LCM = 4788
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Find least common multiple (LCM) of: 42 & 1368 63 & 2052 7 & 228 105 & 3420 147 & 4788 42 & 684 21 & 1368 63 & 684 21 & 2052 105 & 684 21 & 3420 147 & 684 21 & 4788
LCM Calculator
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