What is the Least Common Multiple of 67716 and 67720?

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 67716 and 67720 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67716 and 67720, than apply into the LCM equation.

GCF(67716,67720) = 4
LCM(67716,67720) = ( 67716 × 67720) / 4
LCM(67716,67720) = 4585727520 / 4
LCM(67716,67720) = 1146431880

Least Common Multiple (LCM) of 67716 and 67720 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67716 and 67720. First we will calculate the prime factors of 67716 and 67720.

Prime Factorization of 67716

Prime Factorization of 67720

Now multiplying the highest exponent prime factors to calculate the LCM of 67716 and 67720.

LCM(67716,67720) = 2³ × 3⁴ × 11¹ × 19¹ × 5¹ × 1693¹
LCM(67716,67720) = 1146431880