Is 1331 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 1331 is composite or not first we have to find its factors.
Contents
Factors of 1331:
- If we have taken numbers from 1, 2, 3…for checking factors of 1331, we found that 1331 has factors 1, 11, 121 and 1331. Hence, we must say that 1331 is a composite number.
- Thus, 1331 is the composite number.
- If we multiply 1331 by 1, 2, 3 then we get the multiples of 1331 which are 1331, 2662 and so on.
1331 is a Composite number or Prime number
About the number 1331:
- 1331 has more than two factors which are 1, 11, 121 and 1331 and hence it is the composite number.
- 1331 is the odd composite number and it is not the perfect square also.
- If we divide 1331 by 1, 11, 121 and 1331 then we get remainder as zero. Hence, 1, 11, 121 and 1331 are the factors of 1331
Note:
- 1331 is not the perfect square.
- Factors of 1331: 1, 11, 121 and 1331
- Prime factors of 1331: 11
Conclusion:
- 1331 is the composite number which has factors 1, 11, 121 and 1331.
- And hence, 1331 is not the prime number.
Multiple Choice Questions:
1) 1331 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 1331 are
a) 1
b) 11
c) 1, 121 and 1331
d) 1, 11, 121 and 1331
Ans: b) 1, 121 and 1331
3) 1331 is the odd composite number because
a) It has factors 1, 11, 121 and 1331
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all