What is the Least Common Multiple of 12781 and 12786?
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 12781 and 12786 is 163417866.
LCM(12781,12786) = 163417866
Least Common Multiple of 12781 and 12786 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12781 and 12786, than apply into the LCM equation.
GCF(12781,12786) = 1
LCM(12781,12786) = ( 12781 × 12786) / 1
LCM(12781,12786) = 163417866 / 1
LCM(12781,12786) = 163417866
Least Common Multiple (LCM) of 12781 and 12786 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 12781 and 12786. First we will calculate the prime factors of 12781 and 12786.
Prime Factorization of 12781
Prime factors of 12781 are 12781. Prime factorization of 12781 in exponential form is:
12781 = 127811
Prime Factorization of 12786
Prime factors of 12786 are 2, 3, 2131. Prime factorization of 12786 in exponential form is:
12786 = 21 × 31 × 21311
Now multiplying the highest exponent prime factors to calculate the LCM of 12781 and 12786.
LCM(12781,12786) = 127811 × 21 × 31 × 21311
LCM(12781,12786) = 163417866
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