What is the Least Common Multiple of 61640 and 61645?

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 61640 and 61645 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 61640 and 61645, than apply into the LCM equation.

GCF(61640,61645) = 5
LCM(61640,61645) = ( 61640 × 61645) / 5
LCM(61640,61645) = 3799797800 / 5
LCM(61640,61645) = 759959560

Least Common Multiple (LCM) of 61640 and 61645 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 61640 and 61645. First we will calculate the prime factors of 61640 and 61645.

Prime Factorization of 61640

Prime Factorization of 61645

Now multiplying the highest exponent prime factors to calculate the LCM of 61640 and 61645.

LCM(61640,61645) = 2³ × 5¹ × 23¹ × 67¹ × 12329¹
LCM(61640,61645) = 759959560