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What is the Least Common Multiple of 15630 and 15639?

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 15630 and 15639 is 81479190.

LCM(15630,15639) = 81479190

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Least Common Multiple of 15630 and 15639 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15630 and 15639, than apply into the LCM equation.

GCF(15630,15639) = 3
LCM(15630,15639) = ( 15630 × 15639) / 3
LCM(15630,15639) = 244437570 / 3
LCM(15630,15639) = 81479190

Least Common Multiple (LCM) of 15630 and 15639 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15630 and 15639. First we will calculate the prime factors of 15630 and 15639.

Prime Factorization of 15630

Prime factors of 15630 are 2, 3, 5, 521. Prime factorization of 15630 in exponential form is:

15630 = 21 × 31 × 51 × 5211

Prime Factorization of 15639

Prime factors of 15639 are 3, 13, 401. Prime factorization of 15639 in exponential form is:

15639 = 31 × 131 × 4011

Now multiplying the highest exponent prime factors to calculate the LCM of 15630 and 15639.

LCM(15630,15639) = 21 × 31 × 51 × 5211 × 131 × 4011
LCM(15630,15639) = 81479190