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What is the Least Common Multiple of 91871 and 91891?

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 91871 and 91891 is 8442118061.

LCM(91871,91891) = 8442118061

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Least Common Multiple of 91871 and 91891 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91871 and 91891, than apply into the LCM equation.

GCF(91871,91891) = 1
LCM(91871,91891) = ( 91871 × 91891) / 1
LCM(91871,91891) = 8442118061 / 1
LCM(91871,91891) = 8442118061

Least Common Multiple (LCM) of 91871 and 91891 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91871 and 91891. First we will calculate the prime factors of 91871 and 91891.

Prime Factorization of 91871

Prime factors of 91871 are 13, 37, 191. Prime factorization of 91871 in exponential form is:

91871 = 131 × 371 × 1911

Prime Factorization of 91891

Prime factors of 91891 are 43, 2137. Prime factorization of 91891 in exponential form is:

91891 = 431 × 21371

Now multiplying the highest exponent prime factors to calculate the LCM of 91871 and 91891.

LCM(91871,91891) = 131 × 371 × 1911 × 431 × 21371
LCM(91871,91891) = 8442118061