What is the Least Common Multiple of 21956 and 21969?

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 21956 and 21969 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21956 and 21969, than apply into the LCM equation.

GCF(21956,21969) = 1
LCM(21956,21969) = ( 21956 × 21969) / 1
LCM(21956,21969) = 482351364 / 1
LCM(21956,21969) = 482351364

Least Common Multiple (LCM) of 21956 and 21969 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21956 and 21969. First we will calculate the prime factors of 21956 and 21969.

Prime Factorization of 21956

Prime Factorization of 21969

Now multiplying the highest exponent prime factors to calculate the LCM of 21956 and 21969.

LCM(21956,21969) = 2² × 11¹ × 499¹ × 3² × 2441¹
LCM(21956,21969) = 482351364