What is the Least Common Multiple of 42409 and 42419?

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 42409 and 42419 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42409 and 42419, than apply into the LCM equation.

GCF(42409,42419) = 1
LCM(42409,42419) = ( 42409 × 42419) / 1
LCM(42409,42419) = 1798947371 / 1
LCM(42409,42419) = 1798947371

Least Common Multiple (LCM) of 42409 and 42419 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42409 and 42419. First we will calculate the prime factors of 42409 and 42419.

Prime Factorization of 42409

Prime Factorization of 42419

Now multiplying the highest exponent prime factors to calculate the LCM of 42409 and 42419.

LCM(42409,42419) = 42409¹ × 13² × 251¹
LCM(42409,42419) = 1798947371