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What is the Least Common Multiple of 1200 and 1211?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least common multiple (LCM) of 1200 and 1211 is 1453200.

LCM(1200,1211) = 1453200

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Least Common Multiple of 1200 and 1211 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1200 and 1211, than apply into the LCM equation.

GCF(1200,1211) = 1
LCM(1200,1211) = ( 1200 × 1211) / 1
LCM(1200,1211) = 1453200 / 1
LCM(1200,1211) = 1453200

Least Common Multiple (LCM) of 1200 and 1211 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1200 and 1211. First we will calculate the prime factors of 1200 and 1211.

Prime Factorization of 1200

Prime factors of 1200 are 2, 3, 5. Prime factorization of 1200 in exponential form is:

1200 = 24 × 31 × 52

Prime Factorization of 1211

Prime factors of 1211 are 7, 173. Prime factorization of 1211 in exponential form is:

1211 = 71 × 1731

Now multiplying the highest exponent prime factors to calculate the LCM of 1200 and 1211.

LCM(1200,1211) = 24 × 31 × 52 × 71 × 1731
LCM(1200,1211) = 1453200