What is the Least Common Multiple of 388 and 393?
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 388 and 393 is 152484.
LCM(388,393) = 152484
Least Common Multiple of 388 and 393 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 388 and 393, than apply into the LCM equation.
GCF(388,393) = 1
LCM(388,393) = ( 388 × 393) / 1
LCM(388,393) = 152484 / 1
LCM(388,393) = 152484
Least Common Multiple (LCM) of 388 and 393 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 388 and 393. First we will calculate the prime factors of 388 and 393.
Prime Factorization of 388
Prime factors of 388 are 2, 97. Prime factorization of 388 in exponential form is:
388 = 22 × 971
Prime Factorization of 393
Prime factors of 393 are 3, 131. Prime factorization of 393 in exponential form is:
393 = 31 × 1311
Now multiplying the highest exponent prime factors to calculate the LCM of 388 and 393.
LCM(388,393) = 22 × 971 × 31 × 1311
LCM(388,393) = 152484
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