What is the Least Common Multiple of 21788 and 21802?

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 21788 and 21802 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21788 and 21802, than apply into the LCM equation.

GCF(21788,21802) = 2
LCM(21788,21802) = ( 21788 × 21802) / 2
LCM(21788,21802) = 475021976 / 2
LCM(21788,21802) = 237510988

Least Common Multiple (LCM) of 21788 and 21802 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21788 and 21802. First we will calculate the prime factors of 21788 and 21802.

Prime Factorization of 21788

Prime Factorization of 21802

Now multiplying the highest exponent prime factors to calculate the LCM of 21788 and 21802.

LCM(21788,21802) = 2² × 13¹ × 419¹ × 11¹ × 991¹
LCM(21788,21802) = 237510988