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What is the Least Common Multiple of 4971 and 4989?

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 4971 and 4989 is 8266773.

LCM(4971,4989) = 8266773

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Least Common Multiple of 4971 and 4989 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4971 and 4989, than apply into the LCM equation.

GCF(4971,4989) = 3
LCM(4971,4989) = ( 4971 × 4989) / 3
LCM(4971,4989) = 24800319 / 3
LCM(4971,4989) = 8266773

Least Common Multiple (LCM) of 4971 and 4989 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4971 and 4989. First we will calculate the prime factors of 4971 and 4989.

Prime Factorization of 4971

Prime factors of 4971 are 3, 1657. Prime factorization of 4971 in exponential form is:

4971 = 31 × 16571

Prime Factorization of 4989

Prime factors of 4989 are 3, 1663. Prime factorization of 4989 in exponential form is:

4989 = 31 × 16631

Now multiplying the highest exponent prime factors to calculate the LCM of 4971 and 4989.

LCM(4971,4989) = 31 × 16571 × 16631
LCM(4971,4989) = 8266773