What is the Least Common Multiple of 10421 and 10438?

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 10421 and 10438 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 10421 and 10438, than apply into the LCM equation.

GCF(10421,10438) = 17
LCM(10421,10438) = ( 10421 × 10438) / 17
LCM(10421,10438) = 108774398 / 17
LCM(10421,10438) = 6398494

Least Common Multiple (LCM) of 10421 and 10438 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 10421 and 10438. First we will calculate the prime factors of 10421 and 10438.

Prime Factorization of 10421

Prime Factorization of 10438

Now multiplying the highest exponent prime factors to calculate the LCM of 10421 and 10438.

LCM(10421,10438) = 17¹ × 613¹ × 2¹ × 307¹
LCM(10421,10438) = 6398494