What is the Least Common Multiple of 25438 and 25442?

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 25438 and 25442 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 25438 and 25442, than apply into the LCM equation.

GCF(25438,25442) = 2
LCM(25438,25442) = ( 25438 × 25442) / 2
LCM(25438,25442) = 647193596 / 2
LCM(25438,25442) = 323596798

Least Common Multiple (LCM) of 25438 and 25442 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 25438 and 25442. First we will calculate the prime factors of 25438 and 25442.

Prime Factorization of 25438

Prime Factorization of 25442

Now multiplying the highest exponent prime factors to calculate the LCM of 25438 and 25442.

LCM(25438,25442) = 2¹ × 7¹ × 23¹ × 79¹ × 12721¹
LCM(25438,25442) = 323596798