What is the Least Common Multiple of 385 and 397?
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 385 and 397 is 152845.
LCM(385,397) = 152845
Least Common Multiple of 385 and 397 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 385 and 397, than apply into the LCM equation.
GCF(385,397) = 1
LCM(385,397) = ( 385 × 397) / 1
LCM(385,397) = 152845 / 1
LCM(385,397) = 152845
Least Common Multiple (LCM) of 385 and 397 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 385 and 397. First we will calculate the prime factors of 385 and 397.
Prime Factorization of 385
Prime factors of 385 are 5, 7, 11. Prime factorization of 385 in exponential form is:
385 = 51 × 71 × 111
Prime Factorization of 397
Prime factors of 397 are 397. Prime factorization of 397 in exponential form is:
397 = 3971
Now multiplying the highest exponent prime factors to calculate the LCM of 385 and 397.
LCM(385,397) = 51 × 71 × 111 × 3971
LCM(385,397) = 152845
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