What is the Least Common Multiple of 17415 and 17421?

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 17415 and 17421 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17415 and 17421, than apply into the LCM equation.

GCF(17415,17421) = 3
LCM(17415,17421) = ( 17415 × 17421) / 3
LCM(17415,17421) = 303386715 / 3
LCM(17415,17421) = 101128905

Least Common Multiple (LCM) of 17415 and 17421 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17415 and 17421. First we will calculate the prime factors of 17415 and 17421.

Prime Factorization of 17415

Prime Factorization of 17421

Now multiplying the highest exponent prime factors to calculate the LCM of 17415 and 17421.

LCM(17415,17421) = 3⁴ × 5¹ × 43¹ × 5807¹
LCM(17415,17421) = 101128905