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What is the Least Common Multiple of 11200 and 11220?

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 11200 and 11220 is 6283200.

LCM(11200,11220) = 6283200

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Least Common Multiple of 11200 and 11220 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 11200 and 11220, than apply into the LCM equation.

GCF(11200,11220) = 20
LCM(11200,11220) = ( 11200 × 11220) / 20
LCM(11200,11220) = 125664000 / 20
LCM(11200,11220) = 6283200

Least Common Multiple (LCM) of 11200 and 11220 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 11200 and 11220. First we will calculate the prime factors of 11200 and 11220.

Prime Factorization of 11200

Prime factors of 11200 are 2, 5, 7. Prime factorization of 11200 in exponential form is:

11200 = 26 × 52 × 71

Prime Factorization of 11220

Prime factors of 11220 are 2, 3, 5, 11, 17. Prime factorization of 11220 in exponential form is:

11220 = 22 × 31 × 51 × 111 × 171

Now multiplying the highest exponent prime factors to calculate the LCM of 11200 and 11220.

LCM(11200,11220) = 26 × 52 × 71 × 31 × 111 × 171
LCM(11200,11220) = 6283200