What is the Least Common Multiple of 64760 and 64780?

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 64760 and 64780 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64760 and 64780, than apply into the LCM equation.

GCF(64760,64780) = 20
LCM(64760,64780) = ( 64760 × 64780) / 20
LCM(64760,64780) = 4195152800 / 20
LCM(64760,64780) = 209757640

Least Common Multiple (LCM) of 64760 and 64780 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64760 and 64780. First we will calculate the prime factors of 64760 and 64780.

Prime Factorization of 64760

Prime Factorization of 64780

Now multiplying the highest exponent prime factors to calculate the LCM of 64760 and 64780.

LCM(64760,64780) = 2³ × 5¹ × 1619¹ × 41¹ × 79¹
LCM(64760,64780) = 209757640