What is the Least Common Multiple of 21261 and 21276?

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 21261 and 21276 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21261 and 21276, than apply into the LCM equation.

GCF(21261,21276) = 3
LCM(21261,21276) = ( 21261 × 21276) / 3
LCM(21261,21276) = 452349036 / 3
LCM(21261,21276) = 150783012

Least Common Multiple (LCM) of 21261 and 21276 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21261 and 21276. First we will calculate the prime factors of 21261 and 21276.

Prime Factorization of 21261

Prime Factorization of 21276

Now multiplying the highest exponent prime factors to calculate the LCM of 21261 and 21276.

LCM(21261,21276) = 3³ × 19¹ × 373¹ × 2² × 197¹
LCM(21261,21276) = 150783012