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What is the Least Common Multiple of 28115 and 28122?

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 28115 and 28122 is 790650030.

LCM(28115,28122) = 790650030

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Least Common Multiple of 28115 and 28122 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28115 and 28122, than apply into the LCM equation.

GCF(28115,28122) = 1
LCM(28115,28122) = ( 28115 × 28122) / 1
LCM(28115,28122) = 790650030 / 1
LCM(28115,28122) = 790650030

Least Common Multiple (LCM) of 28115 and 28122 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28115 and 28122. First we will calculate the prime factors of 28115 and 28122.

Prime Factorization of 28115

Prime factors of 28115 are 5, 5623. Prime factorization of 28115 in exponential form is:

28115 = 51 × 56231

Prime Factorization of 28122

Prime factors of 28122 are 2, 3, 43, 109. Prime factorization of 28122 in exponential form is:

28122 = 21 × 31 × 431 × 1091

Now multiplying the highest exponent prime factors to calculate the LCM of 28115 and 28122.

LCM(28115,28122) = 51 × 56231 × 21 × 31 × 431 × 1091
LCM(28115,28122) = 790650030