What is the Least Common Multiple of 15390 and 15397?

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 of 15390 and 15397 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15390 and 15397, than apply into the LCM equation.

GCF(15390,15397) = 1
LCM(15390,15397) = ( 15390 × 15397) / 1
LCM(15390,15397) = 236959830 / 1
LCM(15390,15397) = 236959830

Least Common Multiple (LCM) of 15390 and 15397 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15390 and 15397. First we will calculate the prime factors of 15390 and 15397.

Prime Factorization of 15390

Prime Factorization of 15397

Now multiplying the highest exponent prime factors to calculate the LCM of 15390 and 15397.

LCM(15390,15397) = 2¹ × 3⁴ × 5¹ × 19¹ × 89¹ × 173¹
LCM(15390,15397) = 236959830