What is the Least Common Multiple of 19561 and 19578?

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 19561 and 19578 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19561 and 19578, than apply into the LCM equation.

GCF(19561,19578) = 1
LCM(19561,19578) = ( 19561 × 19578) / 1
LCM(19561,19578) = 382965258 / 1
LCM(19561,19578) = 382965258

Least Common Multiple (LCM) of 19561 and 19578 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19561 and 19578. First we will calculate the prime factors of 19561 and 19578.

Prime Factorization of 19561

Prime Factorization of 19578

Now multiplying the highest exponent prime factors to calculate the LCM of 19561 and 19578.

LCM(19561,19578) = 31¹ × 631¹ × 2¹ × 3¹ × 13¹ × 251¹
LCM(19561,19578) = 382965258