What is the Least Common Multiple of 42261 and 42278?

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 42261 and 42278 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42261 and 42278, than apply into the LCM equation.

GCF(42261,42278) = 1
LCM(42261,42278) = ( 42261 × 42278) / 1
LCM(42261,42278) = 1786710558 / 1
LCM(42261,42278) = 1786710558

Least Common Multiple (LCM) of 42261 and 42278 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42261 and 42278. First we will calculate the prime factors of 42261 and 42278.

Prime Factorization of 42261

Prime Factorization of 42278

Now multiplying the highest exponent prime factors to calculate the LCM of 42261 and 42278.

LCM(42261,42278) = 3¹ × 14087¹ × 2¹ × 21139¹
LCM(42261,42278) = 1786710558