What is the Least Common Multiple of 2638 and 2645?

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 2638 and 2645 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2638 and 2645, than apply into the LCM equation.

GCF(2638,2645) = 1
LCM(2638,2645) = ( 2638 × 2645) / 1
LCM(2638,2645) = 6977510 / 1
LCM(2638,2645) = 6977510

Least Common Multiple (LCM) of 2638 and 2645 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2638 and 2645. First we will calculate the prime factors of 2638 and 2645.

Prime Factorization of 2638

Prime Factorization of 2645

Now multiplying the highest exponent prime factors to calculate the LCM of 2638 and 2645.

LCM(2638,2645) = 2¹ × 1319¹ × 5¹ × 23²
LCM(2638,2645) = 6977510