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What is the Least Common Multiple of 67425 and 67440?

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 67425 and 67440 is 303142800.

LCM(67425,67440) = 303142800

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Least Common Multiple of 67425 and 67440 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67425 and 67440, than apply into the LCM equation.

GCF(67425,67440) = 15
LCM(67425,67440) = ( 67425 × 67440) / 15
LCM(67425,67440) = 4547142000 / 15
LCM(67425,67440) = 303142800

Least Common Multiple (LCM) of 67425 and 67440 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67425 and 67440. First we will calculate the prime factors of 67425 and 67440.

Prime Factorization of 67425

Prime factors of 67425 are 3, 5, 29, 31. Prime factorization of 67425 in exponential form is:

67425 = 31 × 52 × 291 × 311

Prime Factorization of 67440

Prime factors of 67440 are 2, 3, 5, 281. Prime factorization of 67440 in exponential form is:

67440 = 24 × 31 × 51 × 2811

Now multiplying the highest exponent prime factors to calculate the LCM of 67425 and 67440.

LCM(67425,67440) = 31 × 52 × 291 × 311 × 24 × 2811
LCM(67425,67440) = 303142800