What is the Least Common Multiple of 389 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 389 and 397 is 154433.
LCM(389,397) = 154433
Least Common Multiple of 389 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 389 and 397, than apply into the LCM equation.
GCF(389,397) = 1
LCM(389,397) = ( 389 × 397) / 1
LCM(389,397) = 154433 / 1
LCM(389,397) = 154433
Least Common Multiple (LCM) of 389 and 397 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 389 and 397. First we will calculate the prime factors of 389 and 397.
Prime Factorization of 389
Prime factors of 389 are 389. Prime factorization of 389 in exponential form is:
389 = 3891
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 389 and 397.
LCM(389,397) = 3891 × 3971
LCM(389,397) = 154433
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