What is the Least Common Multiple of 19405 and 19409?

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 19405 and 19409 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19405 and 19409, than apply into the LCM equation.

GCF(19405,19409) = 1
LCM(19405,19409) = ( 19405 × 19409) / 1
LCM(19405,19409) = 376631645 / 1
LCM(19405,19409) = 376631645

Least Common Multiple (LCM) of 19405 and 19409 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19405 and 19409. First we will calculate the prime factors of 19405 and 19409.

Prime Factorization of 19405

Prime Factorization of 19409

Now multiplying the highest exponent prime factors to calculate the LCM of 19405 and 19409.

LCM(19405,19409) = 5¹ × 3881¹ × 13¹ × 1493¹
LCM(19405,19409) = 376631645