What is the Least Common Multiple of 855 and 874?
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 874 is 39330.
LCM(855,874) = 39330
Least Common Multiple of 855 and 874 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 874, than apply into the LCM equation.
GCF(855,874) = 19
LCM(855,874) = ( 855 × 874) / 19
LCM(855,874) = 747270 / 19
LCM(855,874) = 39330
Least Common Multiple (LCM) of 855 and 874 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 855 and 874. First we will calculate the prime factors of 855 and 874.
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 874
Prime factors of 874 are 2, 19, 23. Prime factorization of 874 in exponential form is:
874 = 21 × 191 × 231
Now multiplying the highest exponent prime factors to calculate the LCM of 855 and 874.
LCM(855,874) = 32 × 51 × 191 × 21 × 231
LCM(855,874) = 39330
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