What is the Least Common Multiple of 21078 and 21091?

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 21078 and 21091 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21078 and 21091, than apply into the LCM equation.

GCF(21078,21091) = 1
LCM(21078,21091) = ( 21078 × 21091) / 1
LCM(21078,21091) = 444556098 / 1
LCM(21078,21091) = 444556098

Least Common Multiple (LCM) of 21078 and 21091 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21078 and 21091. First we will calculate the prime factors of 21078 and 21091.

Prime Factorization of 21078

Prime Factorization of 21091

Now multiplying the highest exponent prime factors to calculate the LCM of 21078 and 21091.

LCM(21078,21091) = 2¹ × 3² × 1171¹ × 7¹ × 23¹ × 131¹
LCM(21078,21091) = 444556098