What is the Least Common Multiple of 6921 and 6940?

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 6921 and 6940 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6921 and 6940, than apply into the LCM equation.

GCF(6921,6940) = 1
LCM(6921,6940) = ( 6921 × 6940) / 1
LCM(6921,6940) = 48031740 / 1
LCM(6921,6940) = 48031740

Least Common Multiple (LCM) of 6921 and 6940 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6921 and 6940. First we will calculate the prime factors of 6921 and 6940.

Prime Factorization of 6921

Prime Factorization of 6940

Now multiplying the highest exponent prime factors to calculate the LCM of 6921 and 6940.

LCM(6921,6940) = 3² × 769¹ × 2² × 5¹ × 347¹
LCM(6921,6940) = 48031740