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What is the Least Common Multiple of 3904 and 3918?

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 3904 and 3918 is 7647936.

LCM(3904,3918) = 7647936

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Least Common Multiple of 3904 and 3918 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3904 and 3918, than apply into the LCM equation.

GCF(3904,3918) = 2
LCM(3904,3918) = ( 3904 × 3918) / 2
LCM(3904,3918) = 15295872 / 2
LCM(3904,3918) = 7647936

Least Common Multiple (LCM) of 3904 and 3918 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3904 and 3918. First we will calculate the prime factors of 3904 and 3918.

Prime Factorization of 3904

Prime factors of 3904 are 2, 61. Prime factorization of 3904 in exponential form is:

3904 = 26 × 611

Prime Factorization of 3918

Prime factors of 3918 are 2, 3, 653. Prime factorization of 3918 in exponential form is:

3918 = 21 × 31 × 6531

Now multiplying the highest exponent prime factors to calculate the LCM of 3904 and 3918.

LCM(3904,3918) = 26 × 611 × 31 × 6531
LCM(3904,3918) = 7647936