What is the Least Common Multiple of 69620 and 69640?

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 69620 and 69640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 69620 and 69640, than apply into the LCM equation.

GCF(69620,69640) = 20
LCM(69620,69640) = ( 69620 × 69640) / 20
LCM(69620,69640) = 4848336800 / 20
LCM(69620,69640) = 242416840

Least Common Multiple (LCM) of 69620 and 69640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 69620 and 69640. First we will calculate the prime factors of 69620 and 69640.

Prime Factorization of 69620

Prime Factorization of 69640

Now multiplying the highest exponent prime factors to calculate the LCM of 69620 and 69640.

LCM(69620,69640) = 2³ × 5¹ × 59² × 1741¹
LCM(69620,69640) = 242416840