What is the Least Common Multiple of 21060 and 21076?

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 21060 and 21076 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21060 and 21076, than apply into the LCM equation.

GCF(21060,21076) = 4
LCM(21060,21076) = ( 21060 × 21076) / 4
LCM(21060,21076) = 443860560 / 4
LCM(21060,21076) = 110965140

Least Common Multiple (LCM) of 21060 and 21076 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21060 and 21076. First we will calculate the prime factors of 21060 and 21076.

Prime Factorization of 21060

Prime Factorization of 21076

Now multiplying the highest exponent prime factors to calculate the LCM of 21060 and 21076.

LCM(21060,21076) = 2² × 3⁴ × 5¹ × 13¹ × 11¹ × 479¹
LCM(21060,21076) = 110965140