What is the Least Common Multiple of 7605 and 7620?

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 7605 and 7620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7605 and 7620, than apply into the LCM equation.

GCF(7605,7620) = 15
LCM(7605,7620) = ( 7605 × 7620) / 15
LCM(7605,7620) = 57950100 / 15
LCM(7605,7620) = 3863340

Least Common Multiple (LCM) of 7605 and 7620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7605 and 7620. First we will calculate the prime factors of 7605 and 7620.

Prime Factorization of 7605

Prime Factorization of 7620

Now multiplying the highest exponent prime factors to calculate the LCM of 7605 and 7620.

LCM(7605,7620) = 3² × 5¹ × 13² × 2² × 127¹
LCM(7605,7620) = 3863340