What is the Least Common Multiple of 846 and 858?
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 846 and 858 is 120978.
LCM(846,858) = 120978
Least Common Multiple of 846 and 858 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 846 and 858, than apply into the LCM equation.
GCF(846,858) = 6
LCM(846,858) = ( 846 × 858) / 6
LCM(846,858) = 725868 / 6
LCM(846,858) = 120978
Least Common Multiple (LCM) of 846 and 858 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 846 and 858. First we will calculate the prime factors of 846 and 858.
Prime Factorization of 846
Prime factors of 846 are 2, 3, 47. Prime factorization of 846 in exponential form is:
846 = 21 × 32 × 471
Prime Factorization of 858
Prime factors of 858 are 2, 3, 11, 13. Prime factorization of 858 in exponential form is:
858 = 21 × 31 × 111 × 131
Now multiplying the highest exponent prime factors to calculate the LCM of 846 and 858.
LCM(846,858) = 21 × 32 × 471 × 111 × 131
LCM(846,858) = 120978
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