What is the Least Common Multiple of 2688 and 2705?

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 2688 and 2705 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2688 and 2705, than apply into the LCM equation.

GCF(2688,2705) = 1
LCM(2688,2705) = ( 2688 × 2705) / 1
LCM(2688,2705) = 7271040 / 1
LCM(2688,2705) = 7271040

Least Common Multiple (LCM) of 2688 and 2705 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2688 and 2705. First we will calculate the prime factors of 2688 and 2705.

Prime Factorization of 2688

Prime Factorization of 2705

Now multiplying the highest exponent prime factors to calculate the LCM of 2688 and 2705.

LCM(2688,2705) = 2⁷ × 3¹ × 7¹ × 5¹ × 541¹
LCM(2688,2705) = 7271040