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What is the Least Common Multiple of 30121 and 30138?

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 30121 and 30138 is 907786698.

LCM(30121,30138) = 907786698

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Least Common Multiple of 30121 and 30138 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 30121 and 30138, than apply into the LCM equation.

GCF(30121,30138) = 1
LCM(30121,30138) = ( 30121 × 30138) / 1
LCM(30121,30138) = 907786698 / 1
LCM(30121,30138) = 907786698

Least Common Multiple (LCM) of 30121 and 30138 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 30121 and 30138. First we will calculate the prime factors of 30121 and 30138.

Prime Factorization of 30121

Prime factors of 30121 are 7, 13, 331. Prime factorization of 30121 in exponential form is:

30121 = 71 × 131 × 3311

Prime Factorization of 30138

Prime factors of 30138 are 2, 3, 5023. Prime factorization of 30138 in exponential form is:

30138 = 21 × 31 × 50231

Now multiplying the highest exponent prime factors to calculate the LCM of 30121 and 30138.

LCM(30121,30138) = 71 × 131 × 3311 × 21 × 31 × 50231
LCM(30121,30138) = 907786698