Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 825 and 831 the smallest integer that is 228525 that is divisible by both numbers.
Least Common Multiple (LCM) of 825 and 831 is 228525.
LCM(825,831) = 228525
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 825 and 831. First we will calculate the prime factors of 825 and 831.
Prime Factorization of 825
3 | 825 |
5 | 275 |
5 | 55 |
11 | 11 |
1 |
Prime factors of 825 are 3, 5,11. Prime factorization of 825 in exponential form is:
825 = 31×52×111
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
Now multiplying the highest exponent prime factors to calculate the LCM of 825 and 831.
LCM(825,831) = 31×52×111×2771
LCM(825,831) = 228525
Factors of 825
List of positive integer factors of 825 that divides 825 without a remainder.
1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825
Factors of 831
List of positive integer factors of 831 that divides 831 without a remainder.
1, 3, 277, 831
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 825 and 831, than apply into the LCM equation.
GCF(825,831) = 3
LCM(825,831) = ( 825 × 831) / 3
LCM(825,831) = 685575 / 3
LCM(825,831) = 228525
(i) The LCM of 831 and 825 is associative
LCM of 825 and 831 = LCM of 831 and 825
1. What is the LCM of 825 and 831?
Answer: LCM of 825 and 831 is 228525.
2. What are the Factors of 825?
Answer: Factors of 825 are 1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825. There are 12 integers that are factors of 825. The greatest factor of 825 is 825.
3. 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.
4. How to Find the LCM of 825 and 831?
Answer:
Least Common Multiple of 825 and 831 = 228525
Step 1: Find the prime factorization of 825
825 = 3 x 5 x 5 x 11
Step 2: Find the prime factorization of 831
831 = 3 x 277
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 228525 = 3 x 5 x 5 x 11 x 277
Step 4: Therefore, the least common multiple of 825 and 831 is 228525.