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What is the Least Common Multiple of 28710 and 28715?

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 28710 and 28715 is 164881530.

LCM(28710,28715) = 164881530

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Least Common Multiple of 28710 and 28715 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28710 and 28715, than apply into the LCM equation.

GCF(28710,28715) = 5
LCM(28710,28715) = ( 28710 × 28715) / 5
LCM(28710,28715) = 824407650 / 5
LCM(28710,28715) = 164881530

Least Common Multiple (LCM) of 28710 and 28715 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28710 and 28715. First we will calculate the prime factors of 28710 and 28715.

Prime Factorization of 28710

Prime factors of 28710 are 2, 3, 5, 11, 29. Prime factorization of 28710 in exponential form is:

28710 = 21 × 32 × 51 × 111 × 291

Prime Factorization of 28715

Prime factors of 28715 are 5, 5743. Prime factorization of 28715 in exponential form is:

28715 = 51 × 57431

Now multiplying the highest exponent prime factors to calculate the LCM of 28710 and 28715.

LCM(28710,28715) = 21 × 32 × 51 × 111 × 291 × 57431
LCM(28710,28715) = 164881530