Is 1397 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 1397 is composite or not first we have to find its factors.
Contents
Factors of 1397:
- If we have taken numbers from 1, 2, 3…for checking factors of 1397, we found that 1397 has factors 1, 11, 127 and 1397. Hence, we must say that 1397 is a composite number.
- Thus, 1397 is the composite number.
- If we multiply 1397 by 1, 2, 3 then we get the multiples of 1397 which are 1397, 2784 and so on.
1397 is a Composite number or Prime number
About the number 1397:
- 1397 has more than two factors which are 1, 11, 127 and 1397 and hence it is the composite number.
- 1397 is the odd composite number and it is not the perfect square also.
- If we divide 1397 by 1, 11, 127 and 1397 then we get remainder as zero. Hence, 1, 11, 127 and 1397 are the factors of 1397
Note:
- 1397 is not the perfect square.
- Factors of 1397: 1, 11, 127 and 1397
- Prime factors of 1397: 11, 127
Conclusion:
- 1397 is the composite number which has factors 1, 11, 127 and 1397.
- And hence, 1397 is not the prime number.
Multiple Choice Questions:
1) 1397 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 1397 are
a) 1
b) 11, 127
c) 1 and 1397
d) 1, 11, 127 and 1397
Ans: b) 1 and 1397
3) 1397 is the odd composite number because
a) It has factors 1, 11, 127 and 1397
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all