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What is the Least Common Multiple of 31270 and 31286?

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 31270 and 31286 is 489156610.

LCM(31270,31286) = 489156610

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Least Common Multiple of 31270 and 31286 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31270 and 31286, than apply into the LCM equation.

GCF(31270,31286) = 2
LCM(31270,31286) = ( 31270 × 31286) / 2
LCM(31270,31286) = 978313220 / 2
LCM(31270,31286) = 489156610

Least Common Multiple (LCM) of 31270 and 31286 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31270 and 31286. First we will calculate the prime factors of 31270 and 31286.

Prime Factorization of 31270

Prime factors of 31270 are 2, 5, 53, 59. Prime factorization of 31270 in exponential form is:

31270 = 21 × 51 × 531 × 591

Prime Factorization of 31286

Prime factors of 31286 are 2, 15643. Prime factorization of 31286 in exponential form is:

31286 = 21 × 156431

Now multiplying the highest exponent prime factors to calculate the LCM of 31270 and 31286.

LCM(31270,31286) = 21 × 51 × 531 × 591 × 156431
LCM(31270,31286) = 489156610