What is the Least Common Multiple of 66686 and 66690?

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 66686 and 66690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 66686 and 66690, than apply into the LCM equation.

GCF(66686,66690) = 2
LCM(66686,66690) = ( 66686 × 66690) / 2
LCM(66686,66690) = 4447289340 / 2
LCM(66686,66690) = 2223644670

Least Common Multiple (LCM) of 66686 and 66690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 66686 and 66690. First we will calculate the prime factors of 66686 and 66690.

Prime Factorization of 66686

Prime Factorization of 66690

Now multiplying the highest exponent prime factors to calculate the LCM of 66686 and 66690.

LCM(66686,66690) = 2¹ × 33343¹ × 3³ × 5¹ × 13¹ × 19¹
LCM(66686,66690) = 2223644670