What is the LCM of 40 and 420?
The LCM of 40 and 420 is 840.
Steps to find LCM
- Find the prime factorization of 40
40 = 2 × 2 × 2 × 5 - Find the prime factorization of 420
420 = 2 × 2 × 3 × 5 × 7 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 2 × 3 × 5 × 7 - LCM = 840
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Find least common multiple (LCM) of: 80 & 840 20 & 210 120 & 1260 200 & 2100 8 & 84 280 & 2940 80 & 420 40 & 840 120 & 420 40 & 1260 200 & 420 40 & 2100 280 & 420 40 & 2940
LCM Calculator
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