What is the Least Common Multiple of 51280 and 51290?

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 51280 and 51290 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 51280 and 51290, than apply into the LCM equation.

GCF(51280,51290) = 10
LCM(51280,51290) = ( 51280 × 51290) / 10
LCM(51280,51290) = 2630151200 / 10
LCM(51280,51290) = 263015120

Least Common Multiple (LCM) of 51280 and 51290 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 51280 and 51290. First we will calculate the prime factors of 51280 and 51290.

Prime Factorization of 51280

Prime Factorization of 51290

Now multiplying the highest exponent prime factors to calculate the LCM of 51280 and 51290.

LCM(51280,51290) = 2⁴ × 5¹ × 641¹ × 23¹ × 223¹
LCM(51280,51290) = 263015120