Is 2978 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 2978 is composite or not first we have to find its factors.
Factors of 2978:
- If we have taken numbers from 1, 2, 3…for checking factors of 2978, we found that 2978 has factors 1, 2, 1489 and 2978. Hence, we must say that 2978 is a composite number.
- Thus, 2978 is the composite number.
- If we multiply 2978 by 1, 2, 3 then we get the multiples of 2978 which are 2978, 5956 and so on.
About the number 2978:
- 2978 has more than two factors which are 1, 2, 1489 and 2978 and hence it is the composite number.
- 2978 is the even composite number and it is not the perfect square also.
- If we divide 2978 by, 1, 2, 1489 and 2978 then we get remainder as zero. Hence, 1, 2, 1489 and 2978 are the factors of 2978.
Note:
- 2978 is not the perfect square.
- Factors of 2978: 1, 2, 1489 and 2978
- Prime factors of 2978: 2, 1489
Conclusion:
- 2978 is the composite number which has factors, 1, 2, 1489 and 2978
- And hence, 2978 is not the prime number.
Multiple Choice Questions:
1) 2978 is a
a) Prime number
b) Odd number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The composite factors of a composite number 2978 are
a) 2978
b) 2, 1489
c) 2978
d) 1, 2, 1489 and 2978
Ans: c) 2978
3) 2978 is even composite number because
a) It has factors 1, 2, 1489 and 2978
b) It has only two factors
c) Divisible by 2
d) Both a and c
Ans: d) both a and c
