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What is the Least Common Multiple of 25405 and 25417?

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 25405 and 25417 is 645718885.

LCM(25405,25417) = 645718885

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Least Common Multiple of 25405 and 25417 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 25405 and 25417, than apply into the LCM equation.

GCF(25405,25417) = 1
LCM(25405,25417) = ( 25405 × 25417) / 1
LCM(25405,25417) = 645718885 / 1
LCM(25405,25417) = 645718885

Least Common Multiple (LCM) of 25405 and 25417 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 25405 and 25417. First we will calculate the prime factors of 25405 and 25417.

Prime Factorization of 25405

Prime factors of 25405 are 5, 5081. Prime factorization of 25405 in exponential form is:

25405 = 51 × 50811

Prime Factorization of 25417

Prime factors of 25417 are 7, 3631. Prime factorization of 25417 in exponential form is:

25417 = 71 × 36311

Now multiplying the highest exponent prime factors to calculate the LCM of 25405 and 25417.

LCM(25405,25417) = 51 × 50811 × 71 × 36311
LCM(25405,25417) = 645718885