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What is the Least Common Multiple of 74989 and 75005?

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 74989 and 75005 is 5624549945.

LCM(74989,75005) = 5624549945

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Least Common Multiple of 74989 and 75005 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 74989 and 75005, than apply into the LCM equation.

GCF(74989,75005) = 1
LCM(74989,75005) = ( 74989 × 75005) / 1
LCM(74989,75005) = 5624549945 / 1
LCM(74989,75005) = 5624549945

Least Common Multiple (LCM) of 74989 and 75005 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 74989 and 75005. First we will calculate the prime factors of 74989 and 75005.

Prime Factorization of 74989

Prime factors of 74989 are 31, 41, 59. Prime factorization of 74989 in exponential form is:

74989 = 311 × 411 × 591

Prime Factorization of 75005

Prime factors of 75005 are 5, 7, 2143. Prime factorization of 75005 in exponential form is:

75005 = 51 × 71 × 21431

Now multiplying the highest exponent prime factors to calculate the LCM of 74989 and 75005.

LCM(74989,75005) = 311 × 411 × 591 × 51 × 71 × 21431
LCM(74989,75005) = 5624549945