What is the Least Common Multiple of 42758 and 42770?

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 42758 and 42770 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42758 and 42770, than apply into the LCM equation.

GCF(42758,42770) = 2
LCM(42758,42770) = ( 42758 × 42770) / 2
LCM(42758,42770) = 1828759660 / 2
LCM(42758,42770) = 914379830

Least Common Multiple (LCM) of 42758 and 42770 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42758 and 42770. First we will calculate the prime factors of 42758 and 42770.

Prime Factorization of 42758

Prime Factorization of 42770

Now multiplying the highest exponent prime factors to calculate the LCM of 42758 and 42770.

LCM(42758,42770) = 2¹ × 21379¹ × 5¹ × 7¹ × 13¹ × 47¹
LCM(42758,42770) = 914379830