Is 2831 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 2831 is composite or not first we have to find its factors.
Contents
Factors of 2831:
- If we have taken numbers from 1, 2, 3…for checking factors of 2831, we found that 2831 has factors 1, 19, 149 and 2831. Hence, we must say that 2831 is a composite number.
- Thus, 2831 is the composite number.
- If we multiply 2831 by 1, 2, 3 then we get the multiples of 2831 which are 2831, 5662 and so on.
2831 is a Composite number or Prime number
About the number 2831:
- 2831 has more than two factors which are 1, 19, 149 and 2831 and hence it is the composite number.
- 2831 is the odd composite number and it is not the perfect square also.
- If we divide 2831 by 1, 19, 149 and 2831 then we get remainder as zero. Hence 1, 19, 149 and 2831 are the factors of 2831
Note:
- 2831 is not the perfect square.
- Factors of 2831: 1, 19, 149 and 2831
- Prime factors of 2831: 19, 149
Conclusion:
- 2831 is the composite number which has factors 1, 19, 149 and 2831.
- And hence, 2831 is not the prime number.
Multiple Choice Questions:
1) 2831 is a
a) odd number
b) Prime number
c) even number
d) Both a and c
Ans: a) odd number
2) The non-prime factors of a composite number 2831 are
a) 1
b) 19, 149
c) 1, 19, 149 and 2831
d) 1 and 2831
Ans: d) 1 and 2831
3) 2831 is the odd composite number because
a) It has factors 1, 19, 149 and 2831
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all