What is the Least Common Multiple of 42181 and 42190?

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 42181 and 42190 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42181 and 42190, than apply into the LCM equation.

GCF(42181,42190) = 1
LCM(42181,42190) = ( 42181 × 42190) / 1
LCM(42181,42190) = 1779616390 / 1
LCM(42181,42190) = 1779616390

Least Common Multiple (LCM) of 42181 and 42190 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42181 and 42190. First we will calculate the prime factors of 42181 and 42190.

Prime Factorization of 42181

Prime Factorization of 42190

Now multiplying the highest exponent prime factors to calculate the LCM of 42181 and 42190.

LCM(42181,42190) = 42181¹ × 2¹ × 5¹ × 4219¹
LCM(42181,42190) = 1779616390