What is the Least Common Multiple of 25681 and 25691?

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 25681 and 25691 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 25681 and 25691, than apply into the LCM equation.

GCF(25681,25691) = 1
LCM(25681,25691) = ( 25681 × 25691) / 1
LCM(25681,25691) = 659770571 / 1
LCM(25681,25691) = 659770571

Least Common Multiple (LCM) of 25681 and 25691 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 25681 and 25691. First we will calculate the prime factors of 25681 and 25691.

Prime Factorization of 25681

Prime Factorization of 25691

Now multiplying the highest exponent prime factors to calculate the LCM of 25681 and 25691.

LCM(25681,25691) = 61¹ × 421¹ × 23¹ × 1117¹
LCM(25681,25691) = 659770571