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What is the Least Common Multiple of 81949 and 81957?

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 81949 and 81957 is 6716294193.

LCM(81949,81957) = 6716294193

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Least Common Multiple of 81949 and 81957 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81949 and 81957, than apply into the LCM equation.

GCF(81949,81957) = 1
LCM(81949,81957) = ( 81949 × 81957) / 1
LCM(81949,81957) = 6716294193 / 1
LCM(81949,81957) = 6716294193

Least Common Multiple (LCM) of 81949 and 81957 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81949 and 81957. First we will calculate the prime factors of 81949 and 81957.

Prime Factorization of 81949

Prime factors of 81949 are 7, 23, 509. Prime factorization of 81949 in exponential form is:

81949 = 71 × 231 × 5091

Prime Factorization of 81957

Prime factors of 81957 are 3, 17, 1607. Prime factorization of 81957 in exponential form is:

81957 = 31 × 171 × 16071

Now multiplying the highest exponent prime factors to calculate the LCM of 81949 and 81957.

LCM(81949,81957) = 71 × 231 × 5091 × 31 × 171 × 16071
LCM(81949,81957) = 6716294193