What is the Least Common Multiple of 21126 and 21131?

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 21126 and 21131 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21126 and 21131, than apply into the LCM equation.

GCF(21126,21131) = 1
LCM(21126,21131) = ( 21126 × 21131) / 1
LCM(21126,21131) = 446413506 / 1
LCM(21126,21131) = 446413506

Least Common Multiple (LCM) of 21126 and 21131 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21126 and 21131. First we will calculate the prime factors of 21126 and 21131.

Prime Factorization of 21126

Prime Factorization of 21131

Now multiplying the highest exponent prime factors to calculate the LCM of 21126 and 21131.

LCM(21126,21131) = 2¹ × 3¹ × 7¹ × 503¹ × 11¹ × 17¹ × 113¹
LCM(21126,21131) = 446413506