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What is the Least Common Multiple of 139 and 158?

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 139 and 158 is 21962.

LCM(139,158) = 21962

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Least Common Multiple of 139 and 158 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 139 and 158, than apply into the LCM equation.

GCF(139,158) = 1
LCM(139,158) = ( 139 × 158) / 1
LCM(139,158) = 21962 / 1
LCM(139,158) = 21962

Least Common Multiple (LCM) of 139 and 158 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 139 and 158. First we will calculate the prime factors of 139 and 158.

Prime Factorization of 139

Prime factors of 139 are 139. Prime factorization of 139 in exponential form is:

139 = 1391

Prime Factorization of 158

Prime factors of 158 are 2, 79. Prime factorization of 158 in exponential form is:

158 = 21 × 791

Now multiplying the highest exponent prime factors to calculate the LCM of 139 and 158.

LCM(139,158) = 1391 × 21 × 791
LCM(139,158) = 21962