What is the Least Common Multiple of 77616 and 77620?

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 77616 and 77620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 77616 and 77620, than apply into the LCM equation.

GCF(77616,77620) = 4
LCM(77616,77620) = ( 77616 × 77620) / 4
LCM(77616,77620) = 6024553920 / 4
LCM(77616,77620) = 1506138480

Least Common Multiple (LCM) of 77616 and 77620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 77616 and 77620. First we will calculate the prime factors of 77616 and 77620.

Prime Factorization of 77616

Prime Factorization of 77620

Now multiplying the highest exponent prime factors to calculate the LCM of 77616 and 77620.

LCM(77616,77620) = 2⁴ × 3² × 7² × 11¹ × 5¹ × 3881¹
LCM(77616,77620) = 1506138480