What is the Least Common Multiple of 21764 and 21778?

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 21764 and 21778 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21764 and 21778, than apply into the LCM equation.

GCF(21764,21778) = 2
LCM(21764,21778) = ( 21764 × 21778) / 2
LCM(21764,21778) = 473976392 / 2
LCM(21764,21778) = 236988196

Least Common Multiple (LCM) of 21764 and 21778 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21764 and 21778. First we will calculate the prime factors of 21764 and 21778.

Prime Factorization of 21764

Prime Factorization of 21778

Now multiplying the highest exponent prime factors to calculate the LCM of 21764 and 21778.

LCM(21764,21778) = 2² × 5441¹ × 10889¹
LCM(21764,21778) = 236988196