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What is the Least Common Multiple of 68861 and 68870?

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 68861 and 68870 is 4742457070.

LCM(68861,68870) = 4742457070

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Least Common Multiple of 68861 and 68870 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68861 and 68870, than apply into the LCM equation.

GCF(68861,68870) = 1
LCM(68861,68870) = ( 68861 × 68870) / 1
LCM(68861,68870) = 4742457070 / 1
LCM(68861,68870) = 4742457070

Least Common Multiple (LCM) of 68861 and 68870 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68861 and 68870. First we will calculate the prime factors of 68861 and 68870.

Prime Factorization of 68861

Prime factors of 68861 are 13, 5297. Prime factorization of 68861 in exponential form is:

68861 = 131 × 52971

Prime Factorization of 68870

Prime factors of 68870 are 2, 5, 71, 97. Prime factorization of 68870 in exponential form is:

68870 = 21 × 51 × 711 × 971

Now multiplying the highest exponent prime factors to calculate the LCM of 68861 and 68870.

LCM(68861,68870) = 131 × 52971 × 21 × 51 × 711 × 971
LCM(68861,68870) = 4742457070