What is the Least Common Multiple of 64780 and 64790?

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 64780 and 64790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64780 and 64790, than apply into the LCM equation.

GCF(64780,64790) = 10
LCM(64780,64790) = ( 64780 × 64790) / 10
LCM(64780,64790) = 4197096200 / 10
LCM(64780,64790) = 419709620

Least Common Multiple (LCM) of 64780 and 64790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64780 and 64790. First we will calculate the prime factors of 64780 and 64790.

Prime Factorization of 64780

Prime Factorization of 64790

Now multiplying the highest exponent prime factors to calculate the LCM of 64780 and 64790.

LCM(64780,64790) = 2² × 5¹ × 41¹ × 79¹ × 11¹ × 19¹ × 31¹
LCM(64780,64790) = 419709620