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What is the Least Common Multiple of 28643 and 28660?

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 28643 and 28660 is 820908380.

LCM(28643,28660) = 820908380

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Least Common Multiple of 28643 and 28660 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28643 and 28660, than apply into the LCM equation.

GCF(28643,28660) = 1
LCM(28643,28660) = ( 28643 × 28660) / 1
LCM(28643,28660) = 820908380 / 1
LCM(28643,28660) = 820908380

Least Common Multiple (LCM) of 28643 and 28660 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28643 and 28660. First we will calculate the prime factors of 28643 and 28660.

Prime Factorization of 28643

Prime factors of 28643 are 28643. Prime factorization of 28643 in exponential form is:

28643 = 286431

Prime Factorization of 28660

Prime factors of 28660 are 2, 5, 1433. Prime factorization of 28660 in exponential form is:

28660 = 22 × 51 × 14331

Now multiplying the highest exponent prime factors to calculate the LCM of 28643 and 28660.

LCM(28643,28660) = 286431 × 22 × 51 × 14331
LCM(28643,28660) = 820908380