Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1270 and 1275 the smallest integer that is 323850 that is divisible by both numbers.
Least Common Multiple (LCM) of 1270 and 1275 is 323850.
LCM(1270,1275) = 323850
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 1270 and 1275. First we will calculate the prime factors of 1270 and 1275.
Prime Factorization of 1270
2 | 1270 |
5 | 635 |
127 | 127 |
1 |
Prime factors of 1270 are 2, 5,127. Prime factorization of 1270 in exponential form is:
1270 = 21×51×1271
Prime Factorization of 1275
3 | 1275 |
5 | 425 |
5 | 85 |
17 | 17 |
1 |
Prime factors of 1275 are 3, 5,17. Prime factorization of 1275 in exponential form is:
1275 = 31×52×171
Now multiplying the highest exponent prime factors to calculate the LCM of 1270 and 1275.
LCM(1270,1275) = 21×31×52×171×1271
LCM(1270,1275) = 323850
Factors of 1270
List of positive integer factors of 1270 that divides 1270 without a remainder.
1, 2, 5, 10, 127, 254, 635, 1270
Factors of 1275
List of positive integer factors of 1275 that divides 1275 without a remainder.
1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1270 and 1275, than apply into the LCM equation.
GCF(1270,1275) = 5
LCM(1270,1275) = ( 1270 × 1275) / 5
LCM(1270,1275) = 1619250 / 5
LCM(1270,1275) = 323850
(i) The LCM of 1275 and 1270 is associative
LCM of 1270 and 1275 = LCM of 1275 and 1270
1. What is the LCM of 1270 and 1275?
Answer: LCM of 1270 and 1275 is 323850.
2. What are the Factors of 1270?
Answer: Factors of 1270 are 1, 2, 5, 10, 127, 254, 635, 1270. There are 8 integers that are factors of 1270. The greatest factor of 1270 is 1270.
3. What are the Factors of 1275?
Answer: Factors of 1275 are 1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275. There are 12 integers that are factors of 1275. The greatest factor of 1275 is 1275.
4. How to Find the LCM of 1270 and 1275?
Answer:
Least Common Multiple of 1270 and 1275 = 323850
Step 1: Find the prime factorization of 1270
1270 = 2 x 5 x 127
Step 2: Find the prime factorization of 1275
1275 = 3 x 5 x 5 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 = 323850 = 2 x 3 x 5 x 5 x 17 x 127
Step 4: Therefore, the least common multiple of 1270 and 1275 is 323850.