What is the Least Common Multiple of 4378 and 4391?

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 4378 and 4391 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4378 and 4391, than apply into the LCM equation.

GCF(4378,4391) = 1
LCM(4378,4391) = ( 4378 × 4391) / 1
LCM(4378,4391) = 19223798 / 1
LCM(4378,4391) = 19223798

Least Common Multiple (LCM) of 4378 and 4391 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4378 and 4391. First we will calculate the prime factors of 4378 and 4391.

Prime Factorization of 4378

Prime Factorization of 4391

Now multiplying the highest exponent prime factors to calculate the LCM of 4378 and 4391.

LCM(4378,4391) = 2¹ × 11¹ × 199¹ × 4391¹
LCM(4378,4391) = 19223798