What is the Least Common Multiple of 34620 and 34640?

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 34620 and 34640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 34620 and 34640, than apply into the LCM equation.

GCF(34620,34640) = 20
LCM(34620,34640) = ( 34620 × 34640) / 20
LCM(34620,34640) = 1199236800 / 20
LCM(34620,34640) = 59961840

Least Common Multiple (LCM) of 34620 and 34640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 34620 and 34640. First we will calculate the prime factors of 34620 and 34640.

Prime Factorization of 34620

Prime Factorization of 34640

Now multiplying the highest exponent prime factors to calculate the LCM of 34620 and 34640.

LCM(34620,34640) = 2⁴ × 3¹ × 5¹ × 577¹ × 433¹
LCM(34620,34640) = 59961840