What is the Least Common Multiple of 21768 and 21779?

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 21768 and 21779 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21768 and 21779, than apply into the LCM equation.

GCF(21768,21779) = 1
LCM(21768,21779) = ( 21768 × 21779) / 1
LCM(21768,21779) = 474085272 / 1
LCM(21768,21779) = 474085272

Least Common Multiple (LCM) of 21768 and 21779 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21768 and 21779. First we will calculate the prime factors of 21768 and 21779.

Prime Factorization of 21768

Prime Factorization of 21779

Now multiplying the highest exponent prime factors to calculate the LCM of 21768 and 21779.

LCM(21768,21779) = 2³ × 3¹ × 907¹ × 29¹ × 751¹
LCM(21768,21779) = 474085272