What is the Least Common Multiple of 19782 and 19802?

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 19782 and 19802 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19782 and 19802, than apply into the LCM equation.

GCF(19782,19802) = 2
LCM(19782,19802) = ( 19782 × 19802) / 2
LCM(19782,19802) = 391723164 / 2
LCM(19782,19802) = 195861582

Least Common Multiple (LCM) of 19782 and 19802 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19782 and 19802. First we will calculate the prime factors of 19782 and 19802.

Prime Factorization of 19782

Prime Factorization of 19802

Now multiplying the highest exponent prime factors to calculate the LCM of 19782 and 19802.

LCM(19782,19802) = 2¹ × 3² × 7¹ × 157¹ × 9901¹
LCM(19782,19802) = 195861582