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What is the Least Common Multiple of 39921 and 39931?

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 39921 and 39931 is 1594085451.

LCM(39921,39931) = 1594085451

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Least Common Multiple of 39921 and 39931 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39921 and 39931, than apply into the LCM equation.

GCF(39921,39931) = 1
LCM(39921,39931) = ( 39921 × 39931) / 1
LCM(39921,39931) = 1594085451 / 1
LCM(39921,39931) = 1594085451

Least Common Multiple (LCM) of 39921 and 39931 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39921 and 39931. First we will calculate the prime factors of 39921 and 39931.

Prime Factorization of 39921

Prime factors of 39921 are 3, 7, 1901. Prime factorization of 39921 in exponential form is:

39921 = 31 × 71 × 19011

Prime Factorization of 39931

Prime factors of 39931 are 73, 547. Prime factorization of 39931 in exponential form is:

39931 = 731 × 5471

Now multiplying the highest exponent prime factors to calculate the LCM of 39921 and 39931.

LCM(39921,39931) = 31 × 71 × 19011 × 731 × 5471
LCM(39921,39931) = 1594085451