What is the Least Common Multiple of 20685 and 20702?

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 20685 and 20702 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20685 and 20702, than apply into the LCM equation.

GCF(20685,20702) = 1
LCM(20685,20702) = ( 20685 × 20702) / 1
LCM(20685,20702) = 428220870 / 1
LCM(20685,20702) = 428220870

Least Common Multiple (LCM) of 20685 and 20702 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20685 and 20702. First we will calculate the prime factors of 20685 and 20702.

Prime Factorization of 20685

Prime Factorization of 20702

Now multiplying the highest exponent prime factors to calculate the LCM of 20685 and 20702.

LCM(20685,20702) = 3¹ × 5¹ × 7¹ × 197¹ × 2¹ × 11¹ × 941¹
LCM(20685,20702) = 428220870