What is the Least Common Multiple of 71458 and 71470?

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 71458 and 71470 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71458 and 71470, than apply into the LCM equation.

GCF(71458,71470) = 2
LCM(71458,71470) = ( 71458 × 71470) / 2
LCM(71458,71470) = 5107103260 / 2
LCM(71458,71470) = 2553551630

Least Common Multiple (LCM) of 71458 and 71470 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71458 and 71470. First we will calculate the prime factors of 71458 and 71470.

Prime Factorization of 71458

Prime Factorization of 71470

Now multiplying the highest exponent prime factors to calculate the LCM of 71458 and 71470.

LCM(71458,71470) = 2¹ × 35729¹ × 5¹ × 7¹ × 1021¹
LCM(71458,71470) = 2553551630