Is 1286 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 1286 is composite or not first we have to find its factors.
Contents
Factors of 1286:
- If we have taken numbers from 1, 2, 3…for checking factors of 1286, we found that 1286 has factors 1, 2, 643 and 1286. Hence, we must say that 1286 is a composite number.
- Thus, 1286 is the composite number.
- If we multiply 1286 by 1, 2, 3 then we get the multiples of 1286 which are 1286, 2572 and so on.
About the number 1286:
- 1286 has more than two factors which are 1, 2, 643 and 1286 and hence it is the composite number.
- 1286 is the even composite number and it is not the perfect square also.
- If we divide 1286 by 1, 2, 643 and 1286 then we get remainder as zero. Hence, 1, 2, 643 and 1286 are the factors of 1286.
Note:
- 1286 is not the perfect square.
- Factors of 1286: 1, 2, 643 and 1286
- Prime factors of 1286: 2, 643
Conclusion:
- 1286 is the composite number which has factors 1, 2, 643 and 1286
- And hence, 1286 is not the prime number.
Multiple Choice Questions:
1) 1286 is a
a) Even number
b) Not a perfect square number
c) Composite number
d) all
Ans: d) all
2) The composite factors of a composite number 1286 are
a) 1286
b) 2, 643
c) 1 and 1286
d) 1, 2, 643 and 1286
Ans: a) 1286
3) 1286 is composite number because
a) It has factors 1, 2, 643 and 1286
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b