What is the Least Common Multiple of 21371 and 21391?

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 21371 and 21391 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21371 and 21391, than apply into the LCM equation.

GCF(21371,21391) = 1
LCM(21371,21391) = ( 21371 × 21391) / 1
LCM(21371,21391) = 457147061 / 1
LCM(21371,21391) = 457147061

Least Common Multiple (LCM) of 21371 and 21391 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21371 and 21391. First we will calculate the prime factors of 21371 and 21391.

Prime Factorization of 21371

Prime Factorization of 21391

Now multiplying the highest exponent prime factors to calculate the LCM of 21371 and 21391.

LCM(21371,21391) = 7¹ × 43¹ × 71¹ × 21391¹
LCM(21371,21391) = 457147061