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What is the Least Common Multiple of 7131 and 7138?

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 7131 and 7138 is 50901078.

LCM(7131,7138) = 50901078

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Least Common Multiple of 7131 and 7138 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7131 and 7138, than apply into the LCM equation.

GCF(7131,7138) = 1
LCM(7131,7138) = ( 7131 × 7138) / 1
LCM(7131,7138) = 50901078 / 1
LCM(7131,7138) = 50901078

Least Common Multiple (LCM) of 7131 and 7138 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7131 and 7138. First we will calculate the prime factors of 7131 and 7138.

Prime Factorization of 7131

Prime factors of 7131 are 3, 2377. Prime factorization of 7131 in exponential form is:

7131 = 31 × 23771

Prime Factorization of 7138

Prime factors of 7138 are 2, 43, 83. Prime factorization of 7138 in exponential form is:

7138 = 21 × 431 × 831

Now multiplying the highest exponent prime factors to calculate the LCM of 7131 and 7138.

LCM(7131,7138) = 31 × 23771 × 21 × 431 × 831
LCM(7131,7138) = 50901078