What is the Least Common Multiple of 6705 and 6720?

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 6705 and 6720 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6705 and 6720, than apply into the LCM equation.

GCF(6705,6720) = 15
LCM(6705,6720) = ( 6705 × 6720) / 15
LCM(6705,6720) = 45057600 / 15
LCM(6705,6720) = 3003840

Least Common Multiple (LCM) of 6705 and 6720 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6705 and 6720. First we will calculate the prime factors of 6705 and 6720.

Prime Factorization of 6705

Prime Factorization of 6720

Now multiplying the highest exponent prime factors to calculate the LCM of 6705 and 6720.

LCM(6705,6720) = 3² × 5¹ × 149¹ × 2⁶ × 7¹
LCM(6705,6720) = 3003840