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What is the Least Common Multiple of 7981 and 7998?

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 7981 and 7998 is 63832038.

LCM(7981,7998) = 63832038

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Least Common Multiple of 7981 and 7998 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7981 and 7998, than apply into the LCM equation.

GCF(7981,7998) = 1
LCM(7981,7998) = ( 7981 × 7998) / 1
LCM(7981,7998) = 63832038 / 1
LCM(7981,7998) = 63832038

Least Common Multiple (LCM) of 7981 and 7998 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7981 and 7998. First we will calculate the prime factors of 7981 and 7998.

Prime Factorization of 7981

Prime factors of 7981 are 23, 347. Prime factorization of 7981 in exponential form is:

7981 = 231 × 3471

Prime Factorization of 7998

Prime factors of 7998 are 2, 3, 31, 43. Prime factorization of 7998 in exponential form is:

7998 = 21 × 31 × 311 × 431

Now multiplying the highest exponent prime factors to calculate the LCM of 7981 and 7998.

LCM(7981,7998) = 231 × 3471 × 21 × 31 × 311 × 431
LCM(7981,7998) = 63832038