What is the Least Common Multiple of 53720 and 53740?

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 53720 and 53740 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 53720 and 53740, than apply into the LCM equation.

GCF(53720,53740) = 20
LCM(53720,53740) = ( 53720 × 53740) / 20
LCM(53720,53740) = 2886912800 / 20
LCM(53720,53740) = 144345640

Least Common Multiple (LCM) of 53720 and 53740 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 53720 and 53740. First we will calculate the prime factors of 53720 and 53740.

Prime Factorization of 53720

Prime Factorization of 53740

Now multiplying the highest exponent prime factors to calculate the LCM of 53720 and 53740.

LCM(53720,53740) = 2³ × 5¹ × 17¹ × 79¹ × 2687¹
LCM(53720,53740) = 144345640