Is 869 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 869 is composite or not first we have to find its factors.
Contents
Factors of 869:
- If we have taken numbers from 1, 2, 3…for checking factors of 869, we found that 869 has factors 1, 11, 79 and 869. Hence, we must say that 869 is a composite number.
- Thus, 869 is the composite number.
- If we multiply 869 by 1, 2, 3 then we get the multiples of 869 which are 869, 1738 and so on.
869 is a Composite number or Prime number
About the number 869:
- 869 has more than two factors which are 1, 11, 79 and 869 and hence it is the composite number.
- 869 is the odd composite number and it is not the perfect square also.
- If we divide 869 by 1, 11, 79 and 869 then we get remainder as zero. Hence, 1, 11, 79 and 869 are the factors of 869
Note:
- 869 is not the perfect square.
- Factors of 869: 1, 11, 79 and 869
- Prime factors of 869: 11, 79
Conclusion:
- 869 is the composite number which has factors 1, 11, 79 and 869.
- And hence, 869 is not the prime number.
Multiple Choice Questions:
1) 869 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 869 are
a) 1
b) 11, 79
c) 1 and 869
d) 1, 11, 79 and 869
Ans: b) 11, 79
3) 869 is the odd composite number because
a) It has factors 1, 11, 79 and 869
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c