Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7161 and 7168 the smallest integer that is 7332864 that is divisible by both numbers.
Least Common Multiple (LCM) of 7161 and 7168 is 7332864.
LCM(7161,7168) = 7332864
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 7161 and 7168. First we will calculate the prime factors of 7161 and 7168.
Prime Factorization of 7161
3 | 7161 |
7 | 2387 |
11 | 341 |
31 | 31 |
1 |
Prime factors of 7161 are 3, 7, 11,31. Prime factorization of 7161 in exponential form is:
7161 = 31×71×111×311
Prime Factorization of 7168
2 | 7168 |
2 | 3584 |
2 | 1792 |
2 | 896 |
2 | 448 |
2 | 224 |
2 | 112 |
2 | 56 |
2 | 28 |
2 | 14 |
7 | 7 |
1 |
Prime factors of 7168 are 2,7. Prime factorization of 7168 in exponential form is:
7168 = 210×71
Now multiplying the highest exponent prime factors to calculate the LCM of 7161 and 7168.
LCM(7161,7168) = 210×31×71×111×311
LCM(7161,7168) = 7332864
Factors of 7161
List of positive integer factors of 7161 that divides 7161 without a remainder.
1, 3, 7, 11, 21, 31, 33, 77, 93, 217, 231, 341, 651, 1023, 2387, 7161
Factors of 7168
List of positive integer factors of 7168 that divides 7168 without a remainder.
1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1024, 1792, 3584, 7168
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7161 and 7168, than apply into the LCM equation.
GCF(7161,7168) = 7
LCM(7161,7168) = ( 7161 × 7168) / 7
LCM(7161,7168) = 51330048 / 7
LCM(7161,7168) = 7332864
(i) The LCM of 7168 and 7161 is associative
LCM of 7161 and 7168 = LCM of 7168 and 7161
1. What is the LCM of 7161 and 7168?
Answer: LCM of 7161 and 7168 is 7332864.
2. What are the Factors of 7161?
Answer: Factors of 7161 are 1, 3, 7, 11, 21, 31, 33, 77, 93, 217, 231, 341, 651, 1023, 2387, 7161. There are 16 integers that are factors of 7161. The greatest factor of 7161 is 7161.
3. What are the Factors of 7168?
Answer: Factors of 7168 are 1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1024, 1792, 3584, 7168. There are 22 integers that are factors of 7168. The greatest factor of 7168 is 7168.
4. How to Find the LCM of 7161 and 7168?
Answer:
Least Common Multiple of 7161 and 7168 = 7332864
Step 1: Find the prime factorization of 7161
7161 = 3 x 7 x 11 x 31
Step 2: Find the prime factorization of 7168
7168 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7332864 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 11 x 31
Step 4: Therefore, the least common multiple of 7161 and 7168 is 7332864.