What is the Least Common Multiple of 21371 and 21378?

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 21371 and 21378 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21371 and 21378, than apply into the LCM equation.

GCF(21371,21378) = 7
LCM(21371,21378) = ( 21371 × 21378) / 7
LCM(21371,21378) = 456869238 / 7
LCM(21371,21378) = 65267034

Least Common Multiple (LCM) of 21371 and 21378 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21371 and 21378. First we will calculate the prime factors of 21371 and 21378.

Prime Factorization of 21371

Prime Factorization of 21378

Now multiplying the highest exponent prime factors to calculate the LCM of 21371 and 21378.

LCM(21371,21378) = 7¹ × 43¹ × 71¹ × 2¹ × 3¹ × 509¹
LCM(21371,21378) = 65267034