What is the Least Common Multiple of 42278 and 42298?

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 42278 and 42298 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42278 and 42298, than apply into the LCM equation.

GCF(42278,42298) = 2
LCM(42278,42298) = ( 42278 × 42298) / 2
LCM(42278,42298) = 1788274844 / 2
LCM(42278,42298) = 894137422

Least Common Multiple (LCM) of 42278 and 42298 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42278 and 42298. First we will calculate the prime factors of 42278 and 42298.

Prime Factorization of 42278

Prime Factorization of 42298

Now multiplying the highest exponent prime factors to calculate the LCM of 42278 and 42298.

LCM(42278,42298) = 2¹ × 21139¹ × 21149¹
LCM(42278,42298) = 894137422