Is 847 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 847 is composite or not first we have to find its factors.
Contents
Factors of 847:
- If we have taken numbers from 1, 2, 3…for checking factors of 847, we found that 847 has factors 1, 7, 11, 77, 121 and 847. Hence, we must say that 847 is a composite number.
- Thus, 847 is the composite number.
- If we multiply 847 by 1, 2, 3 then we get the multiples of 847 which are 847, 1694 and so on.
847 is a Composite number or Prime number
About the number 847:
- 847 has more than two factors which are 1, 7, 11, 77, 121 and 847 and hence it is the composite number.
- 847 is the odd composite number and it is not the perfect square also.
- If we divide 847 by 1, 7, 11, 77, 121 and 847 then we get remainder as zero. Hence, 1, 7, 11, 77, 121 and 847 are the factors of 847
Note:
- 847 is not the perfect square.
- Factors of 847: 1, 7, 11, 77, 121 and 847
- Prime factors of 847: 7, 11
Conclusion:
- 847 is the composite number which has factors 1, 7, 11, 77, 121 and 847.
- And hence, 847 is not the prime number.
Multiple Choice Questions:
1) 847 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 847 are
a) 1
b) 7, 11
c) 1, 77, 121 and 847
d) 1, 7, 11, 77, 121 and 847
Ans: b) 7, 11
3) 847 is the odd composite number because
a) It has factors 1, 7, 11, 77, 121 and 847
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c