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What is the Least Common Multiple of 83971 and 83985?

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 83971 and 83985 is 7052304435.

LCM(83971,83985) = 7052304435

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Least Common Multiple of 83971 and 83985 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 83971 and 83985, than apply into the LCM equation.

GCF(83971,83985) = 1
LCM(83971,83985) = ( 83971 × 83985) / 1
LCM(83971,83985) = 7052304435 / 1
LCM(83971,83985) = 7052304435

Least Common Multiple (LCM) of 83971 and 83985 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 83971 and 83985. First we will calculate the prime factors of 83971 and 83985.

Prime Factorization of 83971

Prime factors of 83971 are 131, 641. Prime factorization of 83971 in exponential form is:

83971 = 1311 × 6411

Prime Factorization of 83985

Prime factors of 83985 are 3, 5, 11, 509. Prime factorization of 83985 in exponential form is:

83985 = 31 × 51 × 111 × 5091

Now multiplying the highest exponent prime factors to calculate the LCM of 83971 and 83985.

LCM(83971,83985) = 1311 × 6411 × 31 × 51 × 111 × 5091
LCM(83971,83985) = 7052304435