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What is the Least Common Multiple of 28885 and 28905?

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 28885 and 28905 is 166984185.

LCM(28885,28905) = 166984185

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Least Common Multiple of 28885 and 28905 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28885 and 28905, than apply into the LCM equation.

GCF(28885,28905) = 5
LCM(28885,28905) = ( 28885 × 28905) / 5
LCM(28885,28905) = 834920925 / 5
LCM(28885,28905) = 166984185

Least Common Multiple (LCM) of 28885 and 28905 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28885 and 28905. First we will calculate the prime factors of 28885 and 28905.

Prime Factorization of 28885

Prime factors of 28885 are 5, 53, 109. Prime factorization of 28885 in exponential form is:

28885 = 51 × 531 × 1091

Prime Factorization of 28905

Prime factors of 28905 are 3, 5, 41, 47. Prime factorization of 28905 in exponential form is:

28905 = 31 × 51 × 411 × 471

Now multiplying the highest exponent prime factors to calculate the LCM of 28885 and 28905.

LCM(28885,28905) = 51 × 531 × 1091 × 31 × 411 × 471
LCM(28885,28905) = 166984185