What is the LCM of 400 and 420?
The LCM of 400 and 420 is 8400.
Steps to find LCM
- Find the prime factorization of 400
400 = 2 × 2 × 2 × 2 × 5 × 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 × 2 × 3 × 5 × 5 × 7 - LCM = 8400
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Find least common multiple (LCM) of: 800 & 840 200 & 210 1200 & 1260 2000 & 2100 80 & 84 2800 & 2940 800 & 420 400 & 840 1200 & 420 400 & 1260 2000 & 420 400 & 2100 2800 & 420 400 & 2940
LCM Calculator
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