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What is the Least Common Multiple of 17654 and 17664?

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 17654 and 17664 is 155920128.

LCM(17654,17664) = 155920128

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Least Common Multiple of 17654 and 17664 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17654 and 17664, than apply into the LCM equation.

GCF(17654,17664) = 2
LCM(17654,17664) = ( 17654 × 17664) / 2
LCM(17654,17664) = 311840256 / 2
LCM(17654,17664) = 155920128

Least Common Multiple (LCM) of 17654 and 17664 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17654 and 17664. First we will calculate the prime factors of 17654 and 17664.

Prime Factorization of 17654

Prime factors of 17654 are 2, 7, 13, 97. Prime factorization of 17654 in exponential form is:

17654 = 21 × 71 × 131 × 971

Prime Factorization of 17664

Prime factors of 17664 are 2, 3, 23. Prime factorization of 17664 in exponential form is:

17664 = 28 × 31 × 231

Now multiplying the highest exponent prime factors to calculate the LCM of 17654 and 17664.

LCM(17654,17664) = 28 × 71 × 131 × 971 × 31 × 231
LCM(17654,17664) = 155920128