What is the Least Common Multiple of 836 and 855?
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 836 and 855 is 37620.
LCM(836,855) = 37620
Least Common Multiple of 836 and 855 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 836 and 855, than apply into the LCM equation.
GCF(836,855) = 19
LCM(836,855) = ( 836 × 855) / 19
LCM(836,855) = 714780 / 19
LCM(836,855) = 37620
Least Common Multiple (LCM) of 836 and 855 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 836 and 855. First we will calculate the prime factors of 836 and 855.
Prime Factorization of 836
Prime factors of 836 are 2, 11, 19. Prime factorization of 836 in exponential form is:
836 = 22 × 111 × 191
Prime Factorization of 855
Prime factors of 855 are 3, 5, 19. Prime factorization of 855 in exponential form is:
855 = 32 × 51 × 191
Now multiplying the highest exponent prime factors to calculate the LCM of 836 and 855.
LCM(836,855) = 22 × 111 × 191 × 32 × 51
LCM(836,855) = 37620
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