What is the Least Common Multiple of 388 and 392?
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 392 is 38024.
LCM(388,392) = 38024
Least Common Multiple of 388 and 392 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 392, than apply into the LCM equation.
GCF(388,392) = 4
LCM(388,392) = ( 388 × 392) / 4
LCM(388,392) = 152096 / 4
LCM(388,392) = 38024
Least Common Multiple (LCM) of 388 and 392 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 388 and 392. First we will calculate the prime factors of 388 and 392.
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 392
Prime factors of 392 are 2, 7. Prime factorization of 392 in exponential form is:
392 = 23 × 72
Now multiplying the highest exponent prime factors to calculate the LCM of 388 and 392.
LCM(388,392) = 23 × 971 × 72
LCM(388,392) = 38024
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