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What is the Least Common Multiple of 28102 and 28121?

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 28102 and 28121 is 790256342.

LCM(28102,28121) = 790256342

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Least Common Multiple of 28102 and 28121 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28102 and 28121, than apply into the LCM equation.

GCF(28102,28121) = 1
LCM(28102,28121) = ( 28102 × 28121) / 1
LCM(28102,28121) = 790256342 / 1
LCM(28102,28121) = 790256342

Least Common Multiple (LCM) of 28102 and 28121 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28102 and 28121. First we will calculate the prime factors of 28102 and 28121.

Prime Factorization of 28102

Prime factors of 28102 are 2, 14051. Prime factorization of 28102 in exponential form is:

28102 = 21 × 140511

Prime Factorization of 28121

Prime factors of 28121 are 61, 461. Prime factorization of 28121 in exponential form is:

28121 = 611 × 4611

Now multiplying the highest exponent prime factors to calculate the LCM of 28102 and 28121.

LCM(28102,28121) = 21 × 140511 × 611 × 4611
LCM(28102,28121) = 790256342