What is the Least Common Multiple of 21759 and 21771?

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 21759 and 21771 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21759 and 21771, than apply into the LCM equation.

GCF(21759,21771) = 3
LCM(21759,21771) = ( 21759 × 21771) / 3
LCM(21759,21771) = 473715189 / 3
LCM(21759,21771) = 157905063

Least Common Multiple (LCM) of 21759 and 21771 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21759 and 21771. First we will calculate the prime factors of 21759 and 21771.

Prime Factorization of 21759

Prime Factorization of 21771

Now multiplying the highest exponent prime factors to calculate the LCM of 21759 and 21771.

LCM(21759,21771) = 3² × 7253¹ × 41¹ × 59¹
LCM(21759,21771) = 157905063