What is the Least Common Multiple of 20657 and 20663?

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 20657 and 20663 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20657 and 20663, than apply into the LCM equation.

GCF(20657,20663) = 1
LCM(20657,20663) = ( 20657 × 20663) / 1
LCM(20657,20663) = 426835591 / 1
LCM(20657,20663) = 426835591

Least Common Multiple (LCM) of 20657 and 20663 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20657 and 20663. First we will calculate the prime factors of 20657 and 20663.

Prime Factorization of 20657

Prime Factorization of 20663

Now multiplying the highest exponent prime factors to calculate the LCM of 20657 and 20663.

LCM(20657,20663) = 7¹ × 13¹ × 227¹ × 20663¹
LCM(20657,20663) = 426835591