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What is the Least Common Multiple of 15890 and 15897?

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 15890 and 15897 is 36086190.

LCM(15890,15897) = 36086190

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Least Common Multiple of 15890 and 15897 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15890 and 15897, than apply into the LCM equation.

GCF(15890,15897) = 7
LCM(15890,15897) = ( 15890 × 15897) / 7
LCM(15890,15897) = 252603330 / 7
LCM(15890,15897) = 36086190

Least Common Multiple (LCM) of 15890 and 15897 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15890 and 15897. First we will calculate the prime factors of 15890 and 15897.

Prime Factorization of 15890

Prime factors of 15890 are 2, 5, 7, 227. Prime factorization of 15890 in exponential form is:

15890 = 21 × 51 × 71 × 2271

Prime Factorization of 15897

Prime factors of 15897 are 3, 7, 757. Prime factorization of 15897 in exponential form is:

15897 = 31 × 71 × 7571

Now multiplying the highest exponent prime factors to calculate the LCM of 15890 and 15897.

LCM(15890,15897) = 21 × 51 × 71 × 2271 × 31 × 7571
LCM(15890,15897) = 36086190