What is the Least Common Multiple of 850 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 850 and 855 is 145350.
LCM(850,855) = 145350
Least Common Multiple of 850 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 850 and 855, than apply into the LCM equation.
GCF(850,855) = 5
LCM(850,855) = ( 850 × 855) / 5
LCM(850,855) = 726750 / 5
LCM(850,855) = 145350
Least Common Multiple (LCM) of 850 and 855 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 850 and 855. First we will calculate the prime factors of 850 and 855.
Prime Factorization of 850
Prime factors of 850 are 2, 5, 17. Prime factorization of 850 in exponential form is:
850 = 21 × 52 × 171
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 850 and 855.
LCM(850,855) = 21 × 52 × 171 × 32 × 191
LCM(850,855) = 145350
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