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What is the Least Common Multiple of 7905 and 7916?

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 7905 and 7916 is 62575980.

LCM(7905,7916) = 62575980

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Least Common Multiple of 7905 and 7916 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7905 and 7916, than apply into the LCM equation.

GCF(7905,7916) = 1
LCM(7905,7916) = ( 7905 × 7916) / 1
LCM(7905,7916) = 62575980 / 1
LCM(7905,7916) = 62575980

Least Common Multiple (LCM) of 7905 and 7916 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7905 and 7916. First we will calculate the prime factors of 7905 and 7916.

Prime Factorization of 7905

Prime factors of 7905 are 3, 5, 17, 31. Prime factorization of 7905 in exponential form is:

7905 = 31 × 51 × 171 × 311

Prime Factorization of 7916

Prime factors of 7916 are 2, 1979. Prime factorization of 7916 in exponential form is:

7916 = 22 × 19791

Now multiplying the highest exponent prime factors to calculate the LCM of 7905 and 7916.

LCM(7905,7916) = 31 × 51 × 171 × 311 × 22 × 19791
LCM(7905,7916) = 62575980