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What is the Least Common Multiple of 16980 and 16989?

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 16980 and 16989 is 96157740.

LCM(16980,16989) = 96157740

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Least Common Multiple of 16980 and 16989 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16980 and 16989, than apply into the LCM equation.

GCF(16980,16989) = 3
LCM(16980,16989) = ( 16980 × 16989) / 3
LCM(16980,16989) = 288473220 / 3
LCM(16980,16989) = 96157740

Least Common Multiple (LCM) of 16980 and 16989 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16980 and 16989. First we will calculate the prime factors of 16980 and 16989.

Prime Factorization of 16980

Prime factors of 16980 are 2, 3, 5, 283. Prime factorization of 16980 in exponential form is:

16980 = 22 × 31 × 51 × 2831

Prime Factorization of 16989

Prime factors of 16989 are 3, 7, 809. Prime factorization of 16989 in exponential form is:

16989 = 31 × 71 × 8091

Now multiplying the highest exponent prime factors to calculate the LCM of 16980 and 16989.

LCM(16980,16989) = 22 × 31 × 51 × 2831 × 71 × 8091
LCM(16980,16989) = 96157740