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What is the Least Common Multiple of 15635 and 15640?

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 15635 and 15640 is 48906280.

LCM(15635,15640) = 48906280

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Least Common Multiple of 15635 and 15640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15635 and 15640, than apply into the LCM equation.

GCF(15635,15640) = 5
LCM(15635,15640) = ( 15635 × 15640) / 5
LCM(15635,15640) = 244531400 / 5
LCM(15635,15640) = 48906280

Least Common Multiple (LCM) of 15635 and 15640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15635 and 15640. First we will calculate the prime factors of 15635 and 15640.

Prime Factorization of 15635

Prime factors of 15635 are 5, 53, 59. Prime factorization of 15635 in exponential form is:

15635 = 51 × 531 × 591

Prime Factorization of 15640

Prime factors of 15640 are 2, 5, 17, 23. Prime factorization of 15640 in exponential form is:

15640 = 23 × 51 × 171 × 231

Now multiplying the highest exponent prime factors to calculate the LCM of 15635 and 15640.

LCM(15635,15640) = 51 × 531 × 591 × 23 × 171 × 231
LCM(15635,15640) = 48906280