What is the Least Common Multiple of 25420 and 25430?

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 25420 and 25430 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 25420 and 25430, than apply into the LCM equation.

GCF(25420,25430) = 10
LCM(25420,25430) = ( 25420 × 25430) / 10
LCM(25420,25430) = 646430600 / 10
LCM(25420,25430) = 64643060

Least Common Multiple (LCM) of 25420 and 25430 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 25420 and 25430. First we will calculate the prime factors of 25420 and 25430.

Prime Factorization of 25420

Prime Factorization of 25430

Now multiplying the highest exponent prime factors to calculate the LCM of 25420 and 25430.

LCM(25420,25430) = 2² × 5¹ × 31¹ × 41¹ × 2543¹
LCM(25420,25430) = 64643060