What is the Least Common Multiple of 21185 and 21190?

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 21185 and 21190 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21185 and 21190, than apply into the LCM equation.

GCF(21185,21190) = 5
LCM(21185,21190) = ( 21185 × 21190) / 5
LCM(21185,21190) = 448910150 / 5
LCM(21185,21190) = 89782030

Least Common Multiple (LCM) of 21185 and 21190 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21185 and 21190. First we will calculate the prime factors of 21185 and 21190.

Prime Factorization of 21185

Prime Factorization of 21190

Now multiplying the highest exponent prime factors to calculate the LCM of 21185 and 21190.

LCM(21185,21190) = 5¹ × 19¹ × 223¹ × 2¹ × 13¹ × 163¹
LCM(21185,21190) = 89782030