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What is the Least Common Multiple of 25406 and 25415?

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 (LCM) of 25406 and 25415 is 645693490.

LCM(25406,25415) = 645693490

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Least Common Multiple of 25406 and 25415 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 25406 and 25415, than apply into the LCM equation.

GCF(25406,25415) = 1
LCM(25406,25415) = ( 25406 × 25415) / 1
LCM(25406,25415) = 645693490 / 1
LCM(25406,25415) = 645693490

Least Common Multiple (LCM) of 25406 and 25415 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 25406 and 25415. First we will calculate the prime factors of 25406 and 25415.

Prime Factorization of 25406

Prime factors of 25406 are 2, 12703. Prime factorization of 25406 in exponential form is:

25406 = 21 × 127031

Prime Factorization of 25415

Prime factors of 25415 are 5, 13, 17, 23. Prime factorization of 25415 in exponential form is:

25415 = 51 × 131 × 171 × 231

Now multiplying the highest exponent prime factors to calculate the LCM of 25406 and 25415.

LCM(25406,25415) = 21 × 127031 × 51 × 131 × 171 × 231
LCM(25406,25415) = 645693490