What is the Least Common Multiple of 18408 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 18408 and 18428 is 84805656.
LCM(18408,18428) = 84805656
Least Common Multiple of 18408 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 18408 and 18428, than apply into the LCM equation.
GCF(18408,18428) = 4
LCM(18408,18428) = ( 18408 × 18428) / 4
LCM(18408,18428) = 339222624 / 4
LCM(18408,18428) = 84805656
Least Common Multiple (LCM) of 18408 and 18428 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 18408 and 18428. First we will calculate the prime factors of 18408 and 18428.
Prime Factorization of 18408
Prime factors of 18408 are 2, 3, 13, 59. Prime factorization of 18408 in exponential form is:
18408 = 23 × 31 × 131 × 591
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 18408 and 18428.
LCM(18408,18428) = 23 × 31 × 131 × 591 × 171 × 2711
LCM(18408,18428) = 84805656
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