Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 845 and 847 the smallest integer that is 715715 that is divisible by both numbers.
Least Common Multiple (LCM) of 845 and 847 is 715715.
LCM(845,847) = 715715
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 845 and 847. First we will calculate the prime factors of 845 and 847.
Prime Factorization of 845
5 | 845 |
13 | 169 |
13 | 13 |
1 |
Prime factors of 845 are 5,13. Prime factorization of 845 in exponential form is:
845 = 51×132
Prime Factorization of 847
7 | 847 |
11 | 121 |
11 | 11 |
1 |
Prime factors of 847 are 7,11. Prime factorization of 847 in exponential form is:
847 = 71×112
Now multiplying the highest exponent prime factors to calculate the LCM of 845 and 847.
LCM(845,847) = 51×71×112×132
LCM(845,847) = 715715
Factors of 845
List of positive integer factors of 845 that divides 845 without a remainder.
1, 5, 13, 65, 169, 845
Factors of 847
List of positive integer factors of 847 that divides 847 without a remainder.
1, 7, 11, 77, 121, 847
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 845 and 847, than apply into the LCM equation.
GCF(845,847) = 1
LCM(845,847) = ( 845 × 847) / 1
LCM(845,847) = 715715 / 1
LCM(845,847) = 715715
(i) The LCM of 847 and 845 is associative
LCM of 845 and 847 = LCM of 847 and 845
1. What is the LCM of 845 and 847?
Answer: LCM of 845 and 847 is 715715.
2. What are the Factors of 845?
Answer: Factors of 845 are 1, 5, 13, 65, 169, 845. There are 6 integers that are factors of 845. The greatest factor of 845 is 845.
3. What are the Factors of 847?
Answer: Factors of 847 are 1, 7, 11, 77, 121, 847. There are 6 integers that are factors of 847. The greatest factor of 847 is 847.
4. How to Find the LCM of 845 and 847?
Answer:
Least Common Multiple of 845 and 847 = 715715
Step 1: Find the prime factorization of 845
845 = 5 x 13 x 13
Step 2: Find the prime factorization of 847
847 = 7 x 11 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 715715 = 5 x 7 x 11 x 11 x 13 x 13
Step 4: Therefore, the least common multiple of 845 and 847 is 715715.