Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 851 and 857 the smallest integer that is 729307 that is divisible by both numbers.
Least Common Multiple (LCM) of 851 and 857 is 729307.
LCM(851,857) = 729307
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
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
23 | 851 |
37 | 37 |
1 |
Prime factors of 851 are 23,37. Prime factorization of 851 in exponential form is:
851 = 231×371
Prime Factorization of 857
857 | 857 |
1 |
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
Factors of 851
List of positive integer factors of 851 that divides 851 without a remainder.
1, 23, 37, 851
Factors of 857
List of positive integer factors of 857 that divides 857 without a remainder.
1, 857
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
(i) The LCM of 857 and 851 is associative
LCM of 851 and 857 = LCM of 857 and 851
1. What is the LCM of 851 and 857?
Answer: LCM of 851 and 857 is 729307.
2. What are the Factors of 851?
Answer: Factors of 851 are 1, 23, 37, 851. There are 4 integers that are factors of 851. The greatest factor of 851 is 851.
3. What are the Factors of 857?
Answer: Factors of 857 are 1, 857. There are 2 integers that are factors of 857. The greatest factor of 857 is 857.
4. How to Find the LCM of 851 and 857?
Answer:
Least Common Multiple of 851 and 857 = 729307
Step 1: Find the prime factorization of 851
851 = 23 x 37
Step 2: Find the prime factorization of 857
857 = 857
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 729307 = 23 x 37 x 857
Step 4: Therefore, the least common multiple of 851 and 857 is 729307.