Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7100 and 7105 the smallest integer that is 10089100 that is divisible by both numbers.
Least Common Multiple (LCM) of 7100 and 7105 is 10089100.
LCM(7100,7105) = 10089100
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 7100 and 7105. First we will calculate the prime factors of 7100 and 7105.
Prime Factorization of 7100
2 | 7100 |
2 | 3550 |
5 | 1775 |
5 | 355 |
71 | 71 |
1 |
Prime factors of 7100 are 2, 5,71. Prime factorization of 7100 in exponential form is:
7100 = 22×52×711
Prime Factorization of 7105
5 | 7105 |
7 | 1421 |
7 | 203 |
29 | 29 |
1 |
Prime factors of 7105 are 5, 7,29. Prime factorization of 7105 in exponential form is:
7105 = 51×72×291
Now multiplying the highest exponent prime factors to calculate the LCM of 7100 and 7105.
LCM(7100,7105) = 22×52×72×291×711
LCM(7100,7105) = 10089100
Factors of 7100
List of positive integer factors of 7100 that divides 7100 without a remainder.
1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 7100
Factors of 7105
List of positive integer factors of 7105 that divides 7105 without a remainder.
1, 5, 7, 29, 35, 49, 145, 203, 245, 1015, 1421, 7105
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7100 and 7105, than apply into the LCM equation.
GCF(7100,7105) = 5
LCM(7100,7105) = ( 7100 × 7105) / 5
LCM(7100,7105) = 50445500 / 5
LCM(7100,7105) = 10089100
(i) The LCM of 7105 and 7100 is associative
LCM of 7100 and 7105 = LCM of 7105 and 7100
1. What is the LCM of 7100 and 7105?
Answer: LCM of 7100 and 7105 is 10089100.
2. What are the Factors of 7100?
Answer: Factors of 7100 are 1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 7100. There are 18 integers that are factors of 7100. The greatest factor of 7100 is 7100.
3. What are the Factors of 7105?
Answer: Factors of 7105 are 1, 5, 7, 29, 35, 49, 145, 203, 245, 1015, 1421, 7105. There are 12 integers that are factors of 7105. The greatest factor of 7105 is 7105.
4. How to Find the LCM of 7100 and 7105?
Answer:
Least Common Multiple of 7100 and 7105 = 10089100
Step 1: Find the prime factorization of 7100
7100 = 2 x 2 x 5 x 5 x 71
Step 2: Find the prime factorization of 7105
7105 = 5 x 7 x 7 x 29
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 10089100 = 2 x 2 x 5 x 5 x 7 x 7 x 29 x 71
Step 4: Therefore, the least common multiple of 7100 and 7105 is 10089100.