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What is the Least Common Multiple of 31198 and 31215?

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 31198 and 31215 is 973845570.

LCM(31198,31215) = 973845570

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Least Common Multiple of 31198 and 31215 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31198 and 31215, than apply into the LCM equation.

GCF(31198,31215) = 1
LCM(31198,31215) = ( 31198 × 31215) / 1
LCM(31198,31215) = 973845570 / 1
LCM(31198,31215) = 973845570

Least Common Multiple (LCM) of 31198 and 31215 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31198 and 31215. First we will calculate the prime factors of 31198 and 31215.

Prime Factorization of 31198

Prime factors of 31198 are 2, 19, 821. Prime factorization of 31198 in exponential form is:

31198 = 21 × 191 × 8211

Prime Factorization of 31215

Prime factors of 31215 are 3, 5, 2081. Prime factorization of 31215 in exponential form is:

31215 = 31 × 51 × 20811

Now multiplying the highest exponent prime factors to calculate the LCM of 31198 and 31215.

LCM(31198,31215) = 21 × 191 × 8211 × 31 × 51 × 20811
LCM(31198,31215) = 973845570