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What is the Least Common Multiple of 10900 and 10920?

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 10900 and 10920 is 5951400.

LCM(10900,10920) = 5951400

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Least Common Multiple of 10900 and 10920 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 10900 and 10920, than apply into the LCM equation.

GCF(10900,10920) = 20
LCM(10900,10920) = ( 10900 × 10920) / 20
LCM(10900,10920) = 119028000 / 20
LCM(10900,10920) = 5951400

Least Common Multiple (LCM) of 10900 and 10920 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 10900 and 10920. First we will calculate the prime factors of 10900 and 10920.

Prime Factorization of 10900

Prime factors of 10900 are 2, 5, 109. Prime factorization of 10900 in exponential form is:

10900 = 22 × 52 × 1091

Prime Factorization of 10920

Prime factors of 10920 are 2, 3, 5, 7, 13. Prime factorization of 10920 in exponential form is:

10920 = 23 × 31 × 51 × 71 × 131

Now multiplying the highest exponent prime factors to calculate the LCM of 10900 and 10920.

LCM(10900,10920) = 23 × 52 × 1091 × 31 × 71 × 131
LCM(10900,10920) = 5951400