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What is the Least Common Multiple of 13781 and 13791?

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 13781 and 13791 is 190053771.

LCM(13781,13791) = 190053771

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Least Common Multiple of 13781 and 13791 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13781 and 13791, than apply into the LCM equation.

GCF(13781,13791) = 1
LCM(13781,13791) = ( 13781 × 13791) / 1
LCM(13781,13791) = 190053771 / 1
LCM(13781,13791) = 190053771

Least Common Multiple (LCM) of 13781 and 13791 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13781 and 13791. First we will calculate the prime factors of 13781 and 13791.

Prime Factorization of 13781

Prime factors of 13781 are 13781. Prime factorization of 13781 in exponential form is:

13781 = 137811

Prime Factorization of 13791

Prime factors of 13791 are 3, 4597. Prime factorization of 13791 in exponential form is:

13791 = 31 × 45971

Now multiplying the highest exponent prime factors to calculate the LCM of 13781 and 13791.

LCM(13781,13791) = 137811 × 31 × 45971
LCM(13781,13791) = 190053771