What is the Least Common Multiple of 25760 and 25769?

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 25760 and 25769 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 25760 and 25769, than apply into the LCM equation.

GCF(25760,25769) = 1
LCM(25760,25769) = ( 25760 × 25769) / 1
LCM(25760,25769) = 663809440 / 1
LCM(25760,25769) = 663809440

Least Common Multiple (LCM) of 25760 and 25769 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 25760 and 25769. First we will calculate the prime factors of 25760 and 25769.

Prime Factorization of 25760

Prime Factorization of 25769

Now multiplying the highest exponent prime factors to calculate the LCM of 25760 and 25769.

LCM(25760,25769) = 2⁵ × 5¹ × 7¹ × 23¹ × 73¹ × 353¹
LCM(25760,25769) = 663809440