Is 1565 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 1565 is composite or not first we have to find its factors.
Contents
Factors of 1565:
- If we have taken numbers from 1, 2, 3…for checking factors of 1565, we found that 1565 has factors 1, 5, 313 and 1565. Hence, we must say that 1565 is a composite number.
- Thus, 1565 is the composite number.
- If we multiply 1565 by 1, 2, 3 then we get the multiples of 1565 which are 1565, 3130 and so on.
1565 is a Composite number or Prime number
About the number 1565:
- 1565 has more than two factors which are 1, 5, 313 and 1565 and hence it is the composite number.
- 1565 is the odd composite number and it is not the perfect square also.
- If we divide 1565 by 1, 5, 313 and 1565 then we get remainder as zero. Hence, 1, 5, 313 and 1565 are the factors of 1565
Note:
- 1565 is not the perfect square.
- Factors of 1565: 1, 5, 313 and 1565
- Prime factors of 1565: 5, 313
Conclusion:
- 1565 is the composite number which has factors 1, 5, 313 and 1565.
- And hence, 1565 is not the prime number.
Multiple Choice Questions:
1) 1565 is a
a) Even number
b) Prime number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The non-prime factors of a composite number 1565 are
a) 1
b) 5, 313
c) 1 and 1565
d) 1, 5, 313 and 1565
Ans: b) 1 and 1565
3) 1565 is the odd composite number because
a) It has factors 1, 5, 313 and 1565
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all