What is the Least Common Multiple of 66402 and 66420?

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 66402 and 66420 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 66402 and 66420, than apply into the LCM equation.

GCF(66402,66420) = 18
LCM(66402,66420) = ( 66402 × 66420) / 18
LCM(66402,66420) = 4410420840 / 18
LCM(66402,66420) = 245023380

Least Common Multiple (LCM) of 66402 and 66420 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 66402 and 66420. First we will calculate the prime factors of 66402 and 66420.

Prime Factorization of 66402

Prime Factorization of 66420

Now multiplying the highest exponent prime factors to calculate the LCM of 66402 and 66420.

LCM(66402,66420) = 2² × 3⁴ × 7¹ × 17¹ × 31¹ × 5¹ × 41¹
LCM(66402,66420) = 245023380