What is the Least Common Multiple of 2561 and 2578?

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 2561 and 2578 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2561 and 2578, than apply into the LCM equation.

GCF(2561,2578) = 1
LCM(2561,2578) = ( 2561 × 2578) / 1
LCM(2561,2578) = 6602258 / 1
LCM(2561,2578) = 6602258

Least Common Multiple (LCM) of 2561 and 2578 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2561 and 2578. First we will calculate the prime factors of 2561 and 2578.

Prime Factorization of 2561

Prime Factorization of 2578

Now multiplying the highest exponent prime factors to calculate the LCM of 2561 and 2578.

LCM(2561,2578) = 13¹ × 197¹ × 2¹ × 1289¹
LCM(2561,2578) = 6602258