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What is the Least Common Multiple of 18391 and 18407?

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 18391 and 18407 is 338523137.

LCM(18391,18407) = 338523137

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Least Common Multiple of 18391 and 18407 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18391 and 18407, than apply into the LCM equation.

GCF(18391,18407) = 1
LCM(18391,18407) = ( 18391 × 18407) / 1
LCM(18391,18407) = 338523137 / 1
LCM(18391,18407) = 338523137

Least Common Multiple (LCM) of 18391 and 18407 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18391 and 18407. First we will calculate the prime factors of 18391 and 18407.

Prime Factorization of 18391

Prime factors of 18391 are 53, 347. Prime factorization of 18391 in exponential form is:

18391 = 531 × 3471

Prime Factorization of 18407

Prime factors of 18407 are 79, 233. Prime factorization of 18407 in exponential form is:

18407 = 791 × 2331

Now multiplying the highest exponent prime factors to calculate the LCM of 18391 and 18407.

LCM(18391,18407) = 531 × 3471 × 791 × 2331
LCM(18391,18407) = 338523137