What is the Least Common Multiple of 64671 and 64689?

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 64671 and 64689 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64671 and 64689, than apply into the LCM equation.

GCF(64671,64689) = 3
LCM(64671,64689) = ( 64671 × 64689) / 3
LCM(64671,64689) = 4183502319 / 3
LCM(64671,64689) = 1394500773

Least Common Multiple (LCM) of 64671 and 64689 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64671 and 64689. First we will calculate the prime factors of 64671 and 64689.

Prime Factorization of 64671

Prime Factorization of 64689

Now multiplying the highest exponent prime factors to calculate the LCM of 64671 and 64689.

LCM(64671,64689) = 3¹ × 21557¹ × 21563¹
LCM(64671,64689) = 1394500773