What is the Least Common Multiple of 8638 and 8645?

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 8638 and 8645 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8638 and 8645, than apply into the LCM equation.

GCF(8638,8645) = 7
LCM(8638,8645) = ( 8638 × 8645) / 7
LCM(8638,8645) = 74675510 / 7
LCM(8638,8645) = 10667930

Least Common Multiple (LCM) of 8638 and 8645 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 8638 and 8645. First we will calculate the prime factors of 8638 and 8645.

Prime Factorization of 8638

Prime Factorization of 8645

Now multiplying the highest exponent prime factors to calculate the LCM of 8638 and 8645.

LCM(8638,8645) = 2¹ × 7¹ × 617¹ × 5¹ × 13¹ × 19¹
LCM(8638,8645) = 10667930