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What is the Least Common Multiple of 13617 and 13621?

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 13617 and 13621 is 185477157.

LCM(13617,13621) = 185477157

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Least Common Multiple of 13617 and 13621 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13617 and 13621, than apply into the LCM equation.

GCF(13617,13621) = 1
LCM(13617,13621) = ( 13617 × 13621) / 1
LCM(13617,13621) = 185477157 / 1
LCM(13617,13621) = 185477157

Least Common Multiple (LCM) of 13617 and 13621 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13617 and 13621. First we will calculate the prime factors of 13617 and 13621.

Prime Factorization of 13617

Prime factors of 13617 are 3, 17, 89. Prime factorization of 13617 in exponential form is:

13617 = 32 × 171 × 891

Prime Factorization of 13621

Prime factors of 13621 are 53, 257. Prime factorization of 13621 in exponential form is:

13621 = 531 × 2571

Now multiplying the highest exponent prime factors to calculate the LCM of 13617 and 13621.

LCM(13617,13621) = 32 × 171 × 891 × 531 × 2571
LCM(13617,13621) = 185477157