What is the Least Common Multiple of 189 and 204?
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 189 and 204 is 12852.
LCM(189,204) = 12852
Least Common Multiple of 189 and 204 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 189 and 204, than apply into the LCM equation.
GCF(189,204) = 3
LCM(189,204) = ( 189 × 204) / 3
LCM(189,204) = 38556 / 3
LCM(189,204) = 12852
Least Common Multiple (LCM) of 189 and 204 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 189 and 204. First we will calculate the prime factors of 189 and 204.
Prime Factorization of 189
Prime factors of 189 are 3, 7. Prime factorization of 189 in exponential form is:
189 = 33 × 71
Prime Factorization of 204
Prime factors of 204 are 2, 3, 17. Prime factorization of 204 in exponential form is:
204 = 22 × 31 × 171
Now multiplying the highest exponent prime factors to calculate the LCM of 189 and 204.
LCM(189,204) = 33 × 71 × 22 × 171
LCM(189,204) = 12852
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