Is 1323 is a composite number or not ?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 1323 is composite or not first we have to find its factors.
Contents
Factors of 1323:
- If we have taken numbers from 1, 2, 3…for checking factors of 1323, we found that 1323 has factors 1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441 and 1323. Hence, we must say that 1323 is a composite number.
- Thus, 1323 is the composite number.
- If we multiply 1323 by 1, 2, 3 then we get the multiples of 1323 which are 1323, 2646 and so on.
1323 is a Composite number or Prime number
About the number 1323:
- 1323 has more than two factors which are 1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441 and 1323 and hence it is the composite number.
- 1323 is the odd composite number and it is not the perfect square also.
- If we divide 1323 by 1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441 and 1323 then we get remainder as zero. Hence, 1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441 and 1323 are the factors of 1323
Note:
- 1323 is not the perfect square.
- Factors of 1323: 1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441 and 1323
- Prime factors of 1323: 3, 7
Conclusion:
- 1323 is the composite number which has factors 1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441 and 1323.
- And hence, 1323 is not the prime number.
Multiple Choice Questions:
1) 1323 is a
a) Even number
b) Prime number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The non-prime factors of a composite number 1323 are
a) 1
b) 3, 7
c) 1, 9, 21, 27, 49, 63, 147, 189, 441 and 1323
d) 1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441 and 1323
Ans: b) 1, 9, 21, 27, 49, 63, 147, 189, 441 and 1323
3) 1323 is the odd composite number because
a) It has factors 1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441 and 1323
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all