Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1401 and 1405 the smallest integer that is 1968405 that is divisible by both numbers.
Least Common Multiple (LCM) of 1401 and 1405 is 1968405.
LCM(1401,1405) = 1968405
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 1401 and 1405. First we will calculate the prime factors of 1401 and 1405.
Prime Factorization of 1401
3 | 1401 |
467 | 467 |
1 |
Prime factors of 1401 are 3,467. Prime factorization of 1401 in exponential form is:
1401 = 31×4671
Prime Factorization of 1405
5 | 1405 |
281 | 281 |
1 |
Prime factors of 1405 are 5,281. Prime factorization of 1405 in exponential form is:
1405 = 51×2811
Now multiplying the highest exponent prime factors to calculate the LCM of 1401 and 1405.
LCM(1401,1405) = 31×51×2811×4671
LCM(1401,1405) = 1968405
Factors of 1401
List of positive integer factors of 1401 that divides 1401 without a remainder.
1, 3, 467, 1401
Factors of 1405
List of positive integer factors of 1405 that divides 1405 without a remainder.
1, 5, 281, 1405
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1401 and 1405, than apply into the LCM equation.
GCF(1401,1405) = 1
LCM(1401,1405) = ( 1401 × 1405) / 1
LCM(1401,1405) = 1968405 / 1
LCM(1401,1405) = 1968405
(i) The LCM of 1405 and 1401 is associative
LCM of 1401 and 1405 = LCM of 1405 and 1401
1. What is the LCM of 1401 and 1405?
Answer: LCM of 1401 and 1405 is 1968405.
2. What are the Factors of 1401?
Answer: Factors of 1401 are 1, 3, 467, 1401. There are 4 integers that are factors of 1401. The greatest factor of 1401 is 1401.
3. What are the Factors of 1405?
Answer: Factors of 1405 are 1, 5, 281, 1405. There are 4 integers that are factors of 1405. The greatest factor of 1405 is 1405.
4. How to Find the LCM of 1401 and 1405?
Answer:
Least Common Multiple of 1401 and 1405 = 1968405
Step 1: Find the prime factorization of 1401
1401 = 3 x 467
Step 2: Find the prime factorization of 1405
1405 = 5 x 281
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1968405 = 3 x 5 x 281 x 467
Step 4: Therefore, the least common multiple of 1401 and 1405 is 1968405.