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What is the Least Common Multiple of 8642 and 8657?

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 8642 and 8657 is 74813794.

LCM(8642,8657) = 74813794

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Least Common Multiple of 8642 and 8657 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8642 and 8657, than apply into the LCM equation.

GCF(8642,8657) = 1
LCM(8642,8657) = ( 8642 × 8657) / 1
LCM(8642,8657) = 74813794 / 1
LCM(8642,8657) = 74813794

Least Common Multiple (LCM) of 8642 and 8657 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 8642 and 8657. First we will calculate the prime factors of 8642 and 8657.

Prime Factorization of 8642

Prime factors of 8642 are 2, 29, 149. Prime factorization of 8642 in exponential form is:

8642 = 21 × 291 × 1491

Prime Factorization of 8657

Prime factors of 8657 are 11, 787. Prime factorization of 8657 in exponential form is:

8657 = 111 × 7871

Now multiplying the highest exponent prime factors to calculate the LCM of 8642 and 8657.

LCM(8642,8657) = 21 × 291 × 1491 × 111 × 7871
LCM(8642,8657) = 74813794