What is the Least Common Multiple of 857 and 869?
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 857 and 869 is 744733.
LCM(857,869) = 744733
Least Common Multiple of 857 and 869 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 857 and 869, than apply into the LCM equation.
GCF(857,869) = 1
LCM(857,869) = ( 857 × 869) / 1
LCM(857,869) = 744733 / 1
LCM(857,869) = 744733
Least Common Multiple (LCM) of 857 and 869 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 857 and 869. First we will calculate the prime factors of 857 and 869.
Prime Factorization of 857
Prime factors of 857 are 857. Prime factorization of 857 in exponential form is:
857 = 8571
Prime Factorization of 869
Prime factors of 869 are 11, 79. Prime factorization of 869 in exponential form is:
869 = 111 × 791
Now multiplying the highest exponent prime factors to calculate the LCM of 857 and 869.
LCM(857,869) = 8571 × 111 × 791
LCM(857,869) = 744733
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