What is the Least Common Multiple of 42608 and 42620?

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 42608 and 42620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42608 and 42620, than apply into the LCM equation.

GCF(42608,42620) = 4
LCM(42608,42620) = ( 42608 × 42620) / 4
LCM(42608,42620) = 1815952960 / 4
LCM(42608,42620) = 453988240

Least Common Multiple (LCM) of 42608 and 42620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42608 and 42620. First we will calculate the prime factors of 42608 and 42620.

Prime Factorization of 42608

Prime Factorization of 42620

Now multiplying the highest exponent prime factors to calculate the LCM of 42608 and 42620.

LCM(42608,42620) = 2⁴ × 2663¹ × 5¹ × 2131¹
LCM(42608,42620) = 453988240