Is 1659 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 1659 is composite or not first we have to find its factors.
Contents
Factors of 1659:
- If we have taken numbers from 1, 2, 3…for checking factors of 1659, we found that 1659 has factors 1, 3, 7, 21, 79, 237, 553 and 1659. Hence, we must say that 1659 is a composite number.
- Thus, 1659 is the composite number.
- If we multiply 1659 by 1, 2, 3 then we get the multiples of 1659 which are 1659, 3318 and so on.
1659 is a Composite number or Prime number
About the number 1659:
- 1659 has more than two factors which are 1, 3, 7, 21, 79, 237, 553 and 1659 and hence it is the composite number.
- 1659 is the odd composite number and it is not the perfect square also.
- If we divide 1659 by 1, 3, 7, 21, 79, 237, 553 and 1659 then we get remainder as zero. Hence, 1, 3, 7, 21, 79, 237, 553 and 1659 are the factors of 1659
Note:
- 1659 is not the perfect square.
- Factors of 1659: 1, 3, 7, 21, 79, 237, 553 and 1659
- Prime factors of 1659: 3, 7, 79
Conclusion:
- 1659 is the composite number which has factors 1, 3, 7, 21, 79, 237, 553 and 1659.
- And hence, 1659 is not the prime number.
Multiple Choice Questions:
1) 1659 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 1659 are
a) 1
b) 3, 7, 79
c) 1, 21, 237, 553 and 1659
d) 1, 3, 7, 21, 79, 237, 553 and 1659
Ans: b) 1, 21, 237, 553 and 1659
3) 1659 is the odd composite number because
a) It has factors 1, 3, 7, 21, 79, 237, 553 and 1659
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all