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What is the Least Common Multiple of 66680 and 66690?

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 66680 and 66690 is 444688920.

LCM(66680,66690) = 444688920

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Least Common Multiple of 66680 and 66690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 66680 and 66690, than apply into the LCM equation.

GCF(66680,66690) = 10
LCM(66680,66690) = ( 66680 × 66690) / 10
LCM(66680,66690) = 4446889200 / 10
LCM(66680,66690) = 444688920

Least Common Multiple (LCM) of 66680 and 66690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 66680 and 66690. First we will calculate the prime factors of 66680 and 66690.

Prime Factorization of 66680

Prime factors of 66680 are 2, 5, 1667. Prime factorization of 66680 in exponential form is:

66680 = 23 × 51 × 16671

Prime Factorization of 66690

Prime factors of 66690 are 2, 3, 5, 13, 19. Prime factorization of 66690 in exponential form is:

66690 = 21 × 33 × 51 × 131 × 191

Now multiplying the highest exponent prime factors to calculate the LCM of 66680 and 66690.

LCM(66680,66690) = 23 × 51 × 16671 × 33 × 131 × 191
LCM(66680,66690) = 444688920