Is 1611 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 1611 is composite or not first we have to find its factors.
Contents
Factors of 1611:
- If we have taken numbers from 1, 2, 3…for checking factors of 1611, we found that 1611 has factors 1, 3, 9, 179 and 1611. Hence, we must say that 1611 is a composite number.
- Thus, 1611 is the composite number.
- If we multiply 1611 by 1, 2, 3 then we get the multiples of 1611 which are 1611, 3222 and so on.
1611 is a Composite number or Prime number
About the number 1611:
- 1611 has more than two factors which are 1, 3, 9, 179 and 1611 and hence it is the composite number.
- 1611 is the odd composite number and it is not the perfect square also.
- If we divide 1611 by 1, 3, 9, 179 and 1611 then we get remainder as zero. Hence, 1, 3, 9, 179 and 1611 are the factors of 1611
Note:
- 1611 is not the perfect square.
- Factors of 1611: 1, 3, 9, 179 and 1611
- Prime factors of 1611: 3, 179
Conclusion:
- 1611 is the composite number which has factors 1, 3, 9, 179 and 1611.
- And hence, 1611 is not the prime number.
Multiple Choice Questions:
1) 1611 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 1611 are
a) 1
b) 3, 179
c) 1, 9, and 1611
d) 1, 3, 9, 179 and 1611
Ans: b) 1, 9, and 1611
3) 1611 is the odd composite number because
a) It has factors 1, 3, 9, 179 and 1611
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all