What is the Least Common Multiple of 855 and 871?
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 855 and 871 is 744705.
LCM(855,871) = 744705
Least Common Multiple of 855 and 871 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 855 and 871, than apply into the LCM equation.
GCF(855,871) = 1
LCM(855,871) = ( 855 × 871) / 1
LCM(855,871) = 744705 / 1
LCM(855,871) = 744705
Least Common Multiple (LCM) of 855 and 871 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 855 and 871. First we will calculate the prime factors of 855 and 871.
Prime Factorization of 855
Prime factors of 855 are 3, 5, 19. Prime factorization of 855 in exponential form is:
855 = 32 × 51 × 191
Prime Factorization of 871
Prime factors of 871 are 13, 67. Prime factorization of 871 in exponential form is:
871 = 131 × 671
Now multiplying the highest exponent prime factors to calculate the LCM of 855 and 871.
LCM(855,871) = 32 × 51 × 191 × 131 × 671
LCM(855,871) = 744705
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