Is 1539 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 1539 is composite or not first we have to find its factors.
Contents
Factors of 1539:
- If we have taken numbers from 1, 2, 3…for checking factors of 1539, we found that 1539 has factors 1, 3, 9, 19, 27, 57, 81, 171, 513 and 1539. Hence, we must say that 1539 is a composite number.
- Thus, 1539 is the composite number.
- If we multiply 1539 by 1, 2, 3 then we get the multiples of 1539 which are 1539, 3078 and so on.
1539 is a Composite number or Prime number
About the number 1539:
- 1539 has more than two factors which are 1, 3, 9, 19, 27, 57, 81, 171, 513 and 1539 and hence it is the composite number.
- 1539 is the odd composite number and it is not the perfect square also.
- If we divide 1539 by 1, 3, 9, 19, 27, 57, 81, 171, 513 and 1539 then we get remainder as zero. Hence, 1, 3, 9, 19, 27, 57, 81, 171, 513 and 1539 are the factors of 1539
Note:
- 1539 is not the perfect square.
- Factors of 1539: 1, 3, 9, 19, 27, 57, 81, 171, 513 and 1539
- Prime factors of 1539: 3, 19
Conclusion:
- 1539 is the composite number which has factors 1, 3, 9, 19, 27, 57, 81, 171, 513 and 1539.
- And hence, 1539 is not the prime number.
Multiple Choice Questions:
1) 1539 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 1539 are
a) 1
b) 3, 19
c) 1, 9, 27, 57, 81, 171, 513 and 1539
d) 1, 3, 9, 19, 27, 57, 81, 171, 513 and 1539
Ans: b) 1, 9, 27, 57, 81, 171, 513 and 1539
3) 1539 is the odd composite number because
a) It has factors 1, 3, 9, 19, 27, 57, 81, 171, 513 and 1539
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all