What is the Least Common Multiple of 21658 and 21674?

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 21658 and 21674 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21658 and 21674, than apply into the LCM equation.

GCF(21658,21674) = 2
LCM(21658,21674) = ( 21658 × 21674) / 2
LCM(21658,21674) = 469415492 / 2
LCM(21658,21674) = 234707746

Least Common Multiple (LCM) of 21658 and 21674 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21658 and 21674. First we will calculate the prime factors of 21658 and 21674.

Prime Factorization of 21658

Prime Factorization of 21674

Now multiplying the highest exponent prime factors to calculate the LCM of 21658 and 21674.

LCM(21658,21674) = 2¹ × 7² × 13¹ × 17¹ × 10837¹
LCM(21658,21674) = 234707746