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What is the Least Common Multiple of 4206 and 4220?

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 4206 and 4220 is 8874660.

LCM(4206,4220) = 8874660

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Least Common Multiple of 4206 and 4220 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4206 and 4220, than apply into the LCM equation.

GCF(4206,4220) = 2
LCM(4206,4220) = ( 4206 × 4220) / 2
LCM(4206,4220) = 17749320 / 2
LCM(4206,4220) = 8874660

Least Common Multiple (LCM) of 4206 and 4220 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4206 and 4220. First we will calculate the prime factors of 4206 and 4220.

Prime Factorization of 4206

Prime factors of 4206 are 2, 3, 701. Prime factorization of 4206 in exponential form is:

4206 = 21 × 31 × 7011

Prime Factorization of 4220

Prime factors of 4220 are 2, 5, 211. Prime factorization of 4220 in exponential form is:

4220 = 22 × 51 × 2111

Now multiplying the highest exponent prime factors to calculate the LCM of 4206 and 4220.

LCM(4206,4220) = 22 × 31 × 7011 × 51 × 2111
LCM(4206,4220) = 8874660