Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2851 and 2856 the smallest integer that is 8142456 that is divisible by both numbers.
Least Common Multiple (LCM) of 2851 and 2856 is 8142456.
LCM(2851,2856) = 8142456
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 2851 and 2856. First we will calculate the prime factors of 2851 and 2856.
Prime Factorization of 2851
2851 | 2851 |
1 |
Prime factors of 2851 are 2851. Prime factorization of 2851 in exponential form is:
2851 = 28511
Prime Factorization of 2856
2 | 2856 |
2 | 1428 |
2 | 714 |
3 | 357 |
7 | 119 |
17 | 17 |
1 |
Prime factors of 2856 are 2, 3, 7,17. Prime factorization of 2856 in exponential form is:
2856 = 23×31×71×171
Now multiplying the highest exponent prime factors to calculate the LCM of 2851 and 2856.
LCM(2851,2856) = 23×31×71×171×28511
LCM(2851,2856) = 8142456
Factors of 2851
List of positive integer factors of 2851 that divides 2851 without a remainder.
1, 2851
Factors of 2856
List of positive integer factors of 2856 that divides 2856 without a remainder.
1, 2, 3, 4, 6, 7, 8, 12, 14, 17, 21, 24, 28, 34, 42, 51, 56, 68, 84, 102, 119, 136, 168, 204, 238, 357, 408, 476, 714, 952, 1428, 2856
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2851 and 2856, than apply into the LCM equation.
GCF(2851,2856) = 1
LCM(2851,2856) = ( 2851 × 2856) / 1
LCM(2851,2856) = 8142456 / 1
LCM(2851,2856) = 8142456
(i) The LCM of 2856 and 2851 is associative
LCM of 2851 and 2856 = LCM of 2856 and 2851
1. What is the LCM of 2851 and 2856?
Answer: LCM of 2851 and 2856 is 8142456.
2. What are the Factors of 2851?
Answer: Factors of 2851 are 1, 2851. There are 2 integers that are factors of 2851. The greatest factor of 2851 is 2851.
3. What are the Factors of 2856?
Answer: Factors of 2856 are 1, 2, 3, 4, 6, 7, 8, 12, 14, 17, 21, 24, 28, 34, 42, 51, 56, 68, 84, 102, 119, 136, 168, 204, 238, 357, 408, 476, 714, 952, 1428, 2856. There are 32 integers that are factors of 2856. The greatest factor of 2856 is 2856.
4. How to Find the LCM of 2851 and 2856?
Answer:
Least Common Multiple of 2851 and 2856 = 8142456
Step 1: Find the prime factorization of 2851
2851 = 2851
Step 2: Find the prime factorization of 2856
2856 = 2 x 2 x 2 x 3 x 7 x 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 8142456 = 2 x 2 x 2 x 3 x 7 x 17 x 2851
Step 4: Therefore, the least common multiple of 2851 and 2856 is 8142456.