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What is the Least Common Multiple of 67420 and 67439?

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 67420 and 67439 is 4546737380.

LCM(67420,67439) = 4546737380

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Least Common Multiple of 67420 and 67439 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67420 and 67439, than apply into the LCM equation.

GCF(67420,67439) = 1
LCM(67420,67439) = ( 67420 × 67439) / 1
LCM(67420,67439) = 4546737380 / 1
LCM(67420,67439) = 4546737380

Least Common Multiple (LCM) of 67420 and 67439 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67420 and 67439. First we will calculate the prime factors of 67420 and 67439.

Prime Factorization of 67420

Prime factors of 67420 are 2, 5, 3371. Prime factorization of 67420 in exponential form is:

67420 = 22 × 51 × 33711

Prime Factorization of 67439

Prime factors of 67439 are 17, 3967. Prime factorization of 67439 in exponential form is:

67439 = 171 × 39671

Now multiplying the highest exponent prime factors to calculate the LCM of 67420 and 67439.

LCM(67420,67439) = 22 × 51 × 33711 × 171 × 39671
LCM(67420,67439) = 4546737380