What is the Least Common Multiple of 3605 and 3620?

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 3605 and 3620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3605 and 3620, than apply into the LCM equation.

GCF(3605,3620) = 5
LCM(3605,3620) = ( 3605 × 3620) / 5
LCM(3605,3620) = 13050100 / 5
LCM(3605,3620) = 2610020

Least Common Multiple (LCM) of 3605 and 3620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3605 and 3620. First we will calculate the prime factors of 3605 and 3620.

Prime Factorization of 3605

Prime Factorization of 3620

Now multiplying the highest exponent prime factors to calculate the LCM of 3605 and 3620.

LCM(3605,3620) = 5¹ × 7¹ × 103¹ × 2² × 181¹
LCM(3605,3620) = 2610020