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What is the Least Common Multiple of 28974 and 28987?

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 28974 and 28987 is 839869338.

LCM(28974,28987) = 839869338

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Least Common Multiple of 28974 and 28987 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28974 and 28987, than apply into the LCM equation.

GCF(28974,28987) = 1
LCM(28974,28987) = ( 28974 × 28987) / 1
LCM(28974,28987) = 839869338 / 1
LCM(28974,28987) = 839869338

Least Common Multiple (LCM) of 28974 and 28987 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28974 and 28987. First we will calculate the prime factors of 28974 and 28987.

Prime Factorization of 28974

Prime factors of 28974 are 2, 3, 11, 439. Prime factorization of 28974 in exponential form is:

28974 = 21 × 31 × 111 × 4391

Prime Factorization of 28987

Prime factors of 28987 are 7, 41, 101. Prime factorization of 28987 in exponential form is:

28987 = 71 × 411 × 1011

Now multiplying the highest exponent prime factors to calculate the LCM of 28974 and 28987.

LCM(28974,28987) = 21 × 31 × 111 × 4391 × 71 × 411 × 1011
LCM(28974,28987) = 839869338