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What is the Least Common Multiple of 478 and 491?

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 478 and 491 is 234698.

LCM(478,491) = 234698

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Least Common Multiple of 478 and 491 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 478 and 491, than apply into the LCM equation.

GCF(478,491) = 1
LCM(478,491) = ( 478 × 491) / 1
LCM(478,491) = 234698 / 1
LCM(478,491) = 234698

Least Common Multiple (LCM) of 478 and 491 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 478 and 491. First we will calculate the prime factors of 478 and 491.

Prime Factorization of 478

Prime factors of 478 are 2, 239. Prime factorization of 478 in exponential form is:

478 = 21 × 2391

Prime Factorization of 491

Prime factors of 491 are 491. Prime factorization of 491 in exponential form is:

491 = 4911

Now multiplying the highest exponent prime factors to calculate the LCM of 478 and 491.

LCM(478,491) = 21 × 2391 × 4911
LCM(478,491) = 234698