What is the Least Common Multiple of 370 and 390?
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 370 and 390 is 14430.
LCM(370,390) = 14430
Least Common Multiple of 370 and 390 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 370 and 390, than apply into the LCM equation.
GCF(370,390) = 10
LCM(370,390) = ( 370 × 390) / 10
LCM(370,390) = 144300 / 10
LCM(370,390) = 14430
Least Common Multiple (LCM) of 370 and 390 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 370 and 390. First we will calculate the prime factors of 370 and 390.
Prime Factorization of 370
Prime factors of 370 are 2, 5, 37. Prime factorization of 370 in exponential form is:
370 = 21 × 51 × 371
Prime Factorization of 390
Prime factors of 390 are 2, 3, 5, 13. Prime factorization of 390 in exponential form is:
390 = 21 × 31 × 51 × 131
Now multiplying the highest exponent prime factors to calculate the LCM of 370 and 390.
LCM(370,390) = 21 × 51 × 371 × 31 × 131
LCM(370,390) = 14430
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