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What is the Least Common Multiple of 31080 and 31095?

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 31080 and 31095 is 64428840.

LCM(31080,31095) = 64428840

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Least Common Multiple of 31080 and 31095 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31080 and 31095, than apply into the LCM equation.

GCF(31080,31095) = 15
LCM(31080,31095) = ( 31080 × 31095) / 15
LCM(31080,31095) = 966432600 / 15
LCM(31080,31095) = 64428840

Least Common Multiple (LCM) of 31080 and 31095 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31080 and 31095. First we will calculate the prime factors of 31080 and 31095.

Prime Factorization of 31080

Prime factors of 31080 are 2, 3, 5, 7, 37. Prime factorization of 31080 in exponential form is:

31080 = 23 × 31 × 51 × 71 × 371

Prime Factorization of 31095

Prime factors of 31095 are 3, 5, 691. Prime factorization of 31095 in exponential form is:

31095 = 32 × 51 × 6911

Now multiplying the highest exponent prime factors to calculate the LCM of 31080 and 31095.

LCM(31080,31095) = 23 × 32 × 51 × 71 × 371 × 6911
LCM(31080,31095) = 64428840