What is the Least Common Multiple of 21370 and 21388?

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 21370 and 21388 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21370 and 21388, than apply into the LCM equation.

GCF(21370,21388) = 2
LCM(21370,21388) = ( 21370 × 21388) / 2
LCM(21370,21388) = 457061560 / 2
LCM(21370,21388) = 228530780

Least Common Multiple (LCM) of 21370 and 21388 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21370 and 21388. First we will calculate the prime factors of 21370 and 21388.

Prime Factorization of 21370

Prime Factorization of 21388

Now multiplying the highest exponent prime factors to calculate the LCM of 21370 and 21388.

LCM(21370,21388) = 2² × 5¹ × 2137¹ × 5347¹
LCM(21370,21388) = 228530780