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What is the Least Common Multiple of 2905 and 2909?

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 2905 and 2909 is 8450645.

LCM(2905,2909) = 8450645

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Least Common Multiple of 2905 and 2909 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2905 and 2909, than apply into the LCM equation.

GCF(2905,2909) = 1
LCM(2905,2909) = ( 2905 × 2909) / 1
LCM(2905,2909) = 8450645 / 1
LCM(2905,2909) = 8450645

Least Common Multiple (LCM) of 2905 and 2909 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2905 and 2909. First we will calculate the prime factors of 2905 and 2909.

Prime Factorization of 2905

Prime factors of 2905 are 5, 7, 83. Prime factorization of 2905 in exponential form is:

2905 = 51 × 71 × 831

Prime Factorization of 2909

Prime factors of 2909 are 2909. Prime factorization of 2909 in exponential form is:

2909 = 29091

Now multiplying the highest exponent prime factors to calculate the LCM of 2905 and 2909.

LCM(2905,2909) = 51 × 71 × 831 × 29091
LCM(2905,2909) = 8450645