What is the Least Common Multiple of 20661 and 20681?

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 20661 and 20681 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20661 and 20681, than apply into the LCM equation.

GCF(20661,20681) = 1
LCM(20661,20681) = ( 20661 × 20681) / 1
LCM(20661,20681) = 427290141 / 1
LCM(20661,20681) = 427290141

Least Common Multiple (LCM) of 20661 and 20681 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20661 and 20681. First we will calculate the prime factors of 20661 and 20681.

Prime Factorization of 20661

Prime Factorization of 20681

Now multiplying the highest exponent prime factors to calculate the LCM of 20661 and 20681.

LCM(20661,20681) = 3¹ × 71¹ × 97¹ × 20681¹
LCM(20661,20681) = 427290141