What is the Least Common Multiple of 7839 and 7856?
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 7839 and 7856 is 61583184.
LCM(7839,7856) = 61583184
Least Common Multiple of 7839 and 7856 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7839 and 7856, than apply into the LCM equation.
GCF(7839,7856) = 1
LCM(7839,7856) = ( 7839 × 7856) / 1
LCM(7839,7856) = 61583184 / 1
LCM(7839,7856) = 61583184
Least Common Multiple (LCM) of 7839 and 7856 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 7839 and 7856. First we will calculate the prime factors of 7839 and 7856.
Prime Factorization of 7839
Prime factors of 7839 are 3, 13, 67. Prime factorization of 7839 in exponential form is:
7839 = 32 × 131 × 671
Prime Factorization of 7856
Prime factors of 7856 are 2, 491. Prime factorization of 7856 in exponential form is:
7856 = 24 × 4911
Now multiplying the highest exponent prime factors to calculate the LCM of 7839 and 7856.
LCM(7839,7856) = 32 × 131 × 671 × 24 × 4911
LCM(7839,7856) = 61583184
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