Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1265 and 1270 the smallest integer that is 321310 that is divisible by both numbers.
Least Common Multiple (LCM) of 1265 and 1270 is 321310.
LCM(1265,1270) = 321310
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 1265 and 1270. First we will calculate the prime factors of 1265 and 1270.
Prime Factorization of 1265
5 | 1265 |
11 | 253 |
23 | 23 |
1 |
Prime factors of 1265 are 5, 11,23. Prime factorization of 1265 in exponential form is:
1265 = 51×111×231
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
Now multiplying the highest exponent prime factors to calculate the LCM of 1265 and 1270.
LCM(1265,1270) = 21×51×111×231×1271
LCM(1265,1270) = 321310
Factors of 1265
List of positive integer factors of 1265 that divides 1265 without a remainder.
1, 5, 11, 23, 55, 115, 253, 1265
Factors of 1270
List of positive integer factors of 1270 that divides 1270 without a remainder.
1, 2, 5, 10, 127, 254, 635, 1270
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1265 and 1270, than apply into the LCM equation.
GCF(1265,1270) = 5
LCM(1265,1270) = ( 1265 × 1270) / 5
LCM(1265,1270) = 1606550 / 5
LCM(1265,1270) = 321310
(i) The LCM of 1270 and 1265 is associative
LCM of 1265 and 1270 = LCM of 1270 and 1265
1. What is the LCM of 1265 and 1270?
Answer: LCM of 1265 and 1270 is 321310.
2. What are the Factors of 1265?
Answer: Factors of 1265 are 1, 5, 11, 23, 55, 115, 253, 1265. There are 8 integers that are factors of 1265. The greatest factor of 1265 is 1265.
3. 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.
4. How to Find the LCM of 1265 and 1270?
Answer:
Least Common Multiple of 1265 and 1270 = 321310
Step 1: Find the prime factorization of 1265
1265 = 5 x 11 x 23
Step 2: Find the prime factorization of 1270
1270 = 2 x 5 x 127
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 321310 = 2 x 5 x 11 x 23 x 127
Step 4: Therefore, the least common multiple of 1265 and 1270 is 321310.