Is 1247 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 1247 is composite or not first we have to find its factors.
Contents
Factors of 1247:
- If we have taken numbers from 1, 2, 3…for checking factors of 1247, we found that 1247 has factors 1, 29, 43 and 1247. Hence, we must say that 1247 is a composite number.
- Thus, 1247 is the composite number.
- If we multiply 1247 by 1, 2, 3 then we get the multiples of 1247 which are 1247, 2494 and so on.
1247 is a Composite number or Prime number
About the number 1247:
- 1247 has more than two factors which are 1, 29, 43 and 1247 and hence it is the composite number.
- 1247 is the odd composite number and it is not the perfect square also.
- If we divide 1247 by 1, 29, 43 and 1247 then we get remainder as zero. Hence, 1, 29, 43 and 1247 are the factors of 1247
Note:
- 1247 is not the perfect square.
- Factors of 1247: 1, 29, 43 and 1247
- Prime factors of 1247: 29, 43
Conclusion:
- 1247 is the composite number which has factors 1, 29, 43 and 1247.
- And hence, 1247 is not the prime number.
Multiple Choice Questions:
1) 1247 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 1247 are
a) 1
b) 29, 43
c) 1 and 1247
d) 1, 29, 43 and 1247
Ans: b) 1 and 1247
3) 1247 is the odd composite number because
a) It has factors 1, 29, 43 and 1247
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all