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What is the Least Common Multiple of 67764 and 67780?

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 67764 and 67780 is 1148260980.

LCM(67764,67780) = 1148260980

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Least Common Multiple of 67764 and 67780 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67764 and 67780, than apply into the LCM equation.

GCF(67764,67780) = 4
LCM(67764,67780) = ( 67764 × 67780) / 4
LCM(67764,67780) = 4593043920 / 4
LCM(67764,67780) = 1148260980

Least Common Multiple (LCM) of 67764 and 67780 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67764 and 67780. First we will calculate the prime factors of 67764 and 67780.

Prime Factorization of 67764

Prime factors of 67764 are 2, 3, 5647. Prime factorization of 67764 in exponential form is:

67764 = 22 × 31 × 56471

Prime Factorization of 67780

Prime factors of 67780 are 2, 5, 3389. Prime factorization of 67780 in exponential form is:

67780 = 22 × 51 × 33891

Now multiplying the highest exponent prime factors to calculate the LCM of 67764 and 67780.

LCM(67764,67780) = 22 × 31 × 56471 × 51 × 33891
LCM(67764,67780) = 1148260980