What is the Least Common Multiple of 851 and 857?
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 851 and 857 is 729307.
LCM(851,857) = 729307
Least Common Multiple of 851 and 857 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 851 and 857, than apply into the LCM equation.
GCF(851,857) = 1
LCM(851,857) = ( 851 × 857) / 1
LCM(851,857) = 729307 / 1
LCM(851,857) = 729307
Least Common Multiple (LCM) of 851 and 857 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 851 and 857. First we will calculate the prime factors of 851 and 857.
Prime Factorization of 851
Prime factors of 851 are 23, 37. Prime factorization of 851 in exponential form is:
851 = 231 × 371
Prime Factorization of 857
Prime factors of 857 are 857. Prime factorization of 857 in exponential form is:
857 = 8571
Now multiplying the highest exponent prime factors to calculate the LCM of 851 and 857.
LCM(851,857) = 231 × 371 × 8571
LCM(851,857) = 729307
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