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What is the Least Common Multiple of 12991 and 12995?

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 12991 and 12995 is 168818045.

LCM(12991,12995) = 168818045

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Least Common Multiple of 12991 and 12995 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12991 and 12995, than apply into the LCM equation.

GCF(12991,12995) = 1
LCM(12991,12995) = ( 12991 × 12995) / 1
LCM(12991,12995) = 168818045 / 1
LCM(12991,12995) = 168818045

Least Common Multiple (LCM) of 12991 and 12995 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12991 and 12995. First we will calculate the prime factors of 12991 and 12995.

Prime Factorization of 12991

Prime factors of 12991 are 11, 1181. Prime factorization of 12991 in exponential form is:

12991 = 111 × 11811

Prime Factorization of 12995

Prime factors of 12995 are 5, 23, 113. Prime factorization of 12995 in exponential form is:

12995 = 51 × 231 × 1131

Now multiplying the highest exponent prime factors to calculate the LCM of 12991 and 12995.

LCM(12991,12995) = 111 × 11811 × 51 × 231 × 1131
LCM(12991,12995) = 168818045