What is the Least Common Multiple of 42970 and 42974?

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 42970 and 42974 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42970 and 42974, than apply into the LCM equation.

GCF(42970,42974) = 2
LCM(42970,42974) = ( 42970 × 42974) / 2
LCM(42970,42974) = 1846592780 / 2
LCM(42970,42974) = 923296390

Least Common Multiple (LCM) of 42970 and 42974 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42970 and 42974. First we will calculate the prime factors of 42970 and 42974.

Prime Factorization of 42970

Prime Factorization of 42974

Now multiplying the highest exponent prime factors to calculate the LCM of 42970 and 42974.

LCM(42970,42974) = 2¹ × 5¹ × 4297¹ × 21487¹
LCM(42970,42974) = 923296390