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What is the Least Common Multiple of 17316 and 17320?

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 17316 and 17320 is 74978280.

LCM(17316,17320) = 74978280

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Least Common Multiple of 17316 and 17320 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17316 and 17320, than apply into the LCM equation.

GCF(17316,17320) = 4
LCM(17316,17320) = ( 17316 × 17320) / 4
LCM(17316,17320) = 299913120 / 4
LCM(17316,17320) = 74978280

Least Common Multiple (LCM) of 17316 and 17320 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17316 and 17320. First we will calculate the prime factors of 17316 and 17320.

Prime Factorization of 17316

Prime factors of 17316 are 2, 3, 13, 37. Prime factorization of 17316 in exponential form is:

17316 = 22 × 32 × 131 × 371

Prime Factorization of 17320

Prime factors of 17320 are 2, 5, 433. Prime factorization of 17320 in exponential form is:

17320 = 23 × 51 × 4331

Now multiplying the highest exponent prime factors to calculate the LCM of 17316 and 17320.

LCM(17316,17320) = 23 × 32 × 131 × 371 × 51 × 4331
LCM(17316,17320) = 74978280