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What is the Least Common Multiple of 18409 and 18428?

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 18409 and 18428 is 339241052.

LCM(18409,18428) = 339241052

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Least Common Multiple of 18409 and 18428 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18409 and 18428, than apply into the LCM equation.

GCF(18409,18428) = 1
LCM(18409,18428) = ( 18409 × 18428) / 1
LCM(18409,18428) = 339241052 / 1
LCM(18409,18428) = 339241052

Least Common Multiple (LCM) of 18409 and 18428 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18409 and 18428. First we will calculate the prime factors of 18409 and 18428.

Prime Factorization of 18409

Prime factors of 18409 are 41, 449. Prime factorization of 18409 in exponential form is:

18409 = 411 × 4491

Prime Factorization of 18428

Prime factors of 18428 are 2, 17, 271. Prime factorization of 18428 in exponential form is:

18428 = 22 × 171 × 2711

Now multiplying the highest exponent prime factors to calculate the LCM of 18409 and 18428.

LCM(18409,18428) = 411 × 4491 × 22 × 171 × 2711
LCM(18409,18428) = 339241052