Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 831 and 839 the smallest integer that is 697209 that is divisible by both numbers.
Least Common Multiple (LCM) of 831 and 839 is 697209.
LCM(831,839) = 697209
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 831 and 839. First we will calculate the prime factors of 831 and 839.
Prime Factorization of 831
3 | 831 |
277 | 277 |
1 |
Prime factors of 831 are 3,277. Prime factorization of 831 in exponential form is:
831 = 31×2771
Prime Factorization of 839
839 | 839 |
1 |
Prime factors of 839 are 839. Prime factorization of 839 in exponential form is:
839 = 8391
Now multiplying the highest exponent prime factors to calculate the LCM of 831 and 839.
LCM(831,839) = 31×2771×8391
LCM(831,839) = 697209
Factors of 831
List of positive integer factors of 831 that divides 831 without a remainder.
1, 3, 277, 831
Factors of 839
List of positive integer factors of 839 that divides 839 without a remainder.
1, 839
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 831 and 839, than apply into the LCM equation.
GCF(831,839) = 1
LCM(831,839) = ( 831 × 839) / 1
LCM(831,839) = 697209 / 1
LCM(831,839) = 697209
(i) The LCM of 839 and 831 is associative
LCM of 831 and 839 = LCM of 839 and 831
1. What is the LCM of 831 and 839?
Answer: LCM of 831 and 839 is 697209.
2. What are the Factors of 831?
Answer: Factors of 831 are 1, 3, 277, 831. There are 4 integers that are factors of 831. The greatest factor of 831 is 831.
3. What are the Factors of 839?
Answer: Factors of 839 are 1, 839. There are 2 integers that are factors of 839. The greatest factor of 839 is 839.
4. How to Find the LCM of 831 and 839?
Answer:
Least Common Multiple of 831 and 839 = 697209
Step 1: Find the prime factorization of 831
831 = 3 x 277
Step 2: Find the prime factorization of 839
839 = 839
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 697209 = 3 x 277 x 839
Step 4: Therefore, the least common multiple of 831 and 839 is 697209.