What is the Least Common Multiple of 18408 and 18422?
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 18422 is 169556088.
LCM(18408,18422) = 169556088
Least Common Multiple of 18408 and 18422 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 18422, than apply into the LCM equation.
GCF(18408,18422) = 2
LCM(18408,18422) = ( 18408 × 18422) / 2
LCM(18408,18422) = 339112176 / 2
LCM(18408,18422) = 169556088
Least Common Multiple (LCM) of 18408 and 18422 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 18408 and 18422. First we will calculate the prime factors of 18408 and 18422.
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 18422
Prime factors of 18422 are 2, 61, 151. Prime factorization of 18422 in exponential form is:
18422 = 21 × 611 × 1511
Now multiplying the highest exponent prime factors to calculate the LCM of 18408 and 18422.
LCM(18408,18422) = 23 × 31 × 131 × 591 × 611 × 1511
LCM(18408,18422) = 169556088
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