What is the Least Common Multiple of 20641 and 20651?

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 20641 and 20651 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20641 and 20651, than apply into the LCM equation.

GCF(20641,20651) = 1
LCM(20641,20651) = ( 20641 × 20651) / 1
LCM(20641,20651) = 426257291 / 1
LCM(20641,20651) = 426257291

Least Common Multiple (LCM) of 20641 and 20651 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20641 and 20651. First we will calculate the prime factors of 20641 and 20651.

Prime Factorization of 20641

Prime Factorization of 20651

Now multiplying the highest exponent prime factors to calculate the LCM of 20641 and 20651.

LCM(20641,20651) = 20641¹ × 107¹ × 193¹
LCM(20641,20651) = 426257291