What is the Least Common Multiple of 42068 and 42080?

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 42068 and 42080 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42068 and 42080, than apply into the LCM equation.

GCF(42068,42080) = 4
LCM(42068,42080) = ( 42068 × 42080) / 4
LCM(42068,42080) = 1770221440 / 4
LCM(42068,42080) = 442555360

Least Common Multiple (LCM) of 42068 and 42080 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42068 and 42080. First we will calculate the prime factors of 42068 and 42080.

Prime Factorization of 42068

Prime Factorization of 42080

Now multiplying the highest exponent prime factors to calculate the LCM of 42068 and 42080.

LCM(42068,42080) = 2⁵ × 13¹ × 809¹ × 5¹ × 263¹
LCM(42068,42080) = 442555360