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What is the Least Common Multiple of 77672 and 77691?

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 77672 and 77691 is 317600808.

LCM(77672,77691) = 317600808

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Least Common Multiple of 77672 and 77691 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 77672 and 77691, than apply into the LCM equation.

GCF(77672,77691) = 19
LCM(77672,77691) = ( 77672 × 77691) / 19
LCM(77672,77691) = 6034415352 / 19
LCM(77672,77691) = 317600808

Least Common Multiple (LCM) of 77672 and 77691 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 77672 and 77691. First we will calculate the prime factors of 77672 and 77691.

Prime Factorization of 77672

Prime factors of 77672 are 2, 7, 19, 73. Prime factorization of 77672 in exponential form is:

77672 = 23 × 71 × 191 × 731

Prime Factorization of 77691

Prime factors of 77691 are 3, 19, 29, 47. Prime factorization of 77691 in exponential form is:

77691 = 31 × 191 × 291 × 471

Now multiplying the highest exponent prime factors to calculate the LCM of 77672 and 77691.

LCM(77672,77691) = 23 × 71 × 191 × 731 × 31 × 291 × 471
LCM(77672,77691) = 317600808