What is the Least Common Multiple of 860 and 878?
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 860 and 878 is 377540.
LCM(860,878) = 377540
Least Common Multiple of 860 and 878 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 860 and 878, than apply into the LCM equation.
GCF(860,878) = 2
LCM(860,878) = ( 860 × 878) / 2
LCM(860,878) = 755080 / 2
LCM(860,878) = 377540
Least Common Multiple (LCM) of 860 and 878 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 860 and 878. First we will calculate the prime factors of 860 and 878.
Prime Factorization of 860
Prime factors of 860 are 2, 5, 43. Prime factorization of 860 in exponential form is:
860 = 22 × 51 × 431
Prime Factorization of 878
Prime factors of 878 are 2, 439. Prime factorization of 878 in exponential form is:
878 = 21 × 4391
Now multiplying the highest exponent prime factors to calculate the LCM of 860 and 878.
LCM(860,878) = 22 × 51 × 431 × 4391
LCM(860,878) = 377540
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