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What is the Least Common Multiple of 31691 and 31706?

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 31691 and 31706 is 1004794846.

LCM(31691,31706) = 1004794846

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Least Common Multiple of 31691 and 31706 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31691 and 31706, than apply into the LCM equation.

GCF(31691,31706) = 1
LCM(31691,31706) = ( 31691 × 31706) / 1
LCM(31691,31706) = 1004794846 / 1
LCM(31691,31706) = 1004794846

Least Common Multiple (LCM) of 31691 and 31706 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31691 and 31706. First we will calculate the prime factors of 31691 and 31706.

Prime Factorization of 31691

Prime factors of 31691 are 11, 43, 67. Prime factorization of 31691 in exponential form is:

31691 = 111 × 431 × 671

Prime Factorization of 31706

Prime factors of 31706 are 2, 83, 191. Prime factorization of 31706 in exponential form is:

31706 = 21 × 831 × 1911

Now multiplying the highest exponent prime factors to calculate the LCM of 31691 and 31706.

LCM(31691,31706) = 111 × 431 × 671 × 21 × 831 × 1911
LCM(31691,31706) = 1004794846