Is 1629 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 1629 is composite or not first we have to find its factors.
Contents
Factors of 1629:
- If we have taken numbers from 1, 2, 3…for checking factors of 1629, we found that 1629 has factors 1, 3, 9, 181, 543 and 1629. Hence, we must say that 1629 is a composite number.
- Thus, 1629 is the composite number.
- If we multiply 1629 by 1, 2, 3 then we get the multiples of 1629 which are 1629, 3258 and so on.
1629 is a Composite number or Prime number
About the number 1629:
- 1629 has more than two factors which are 1, 3, 9, 181, 543 and 1629 and hence it is the composite number.
- 1629 is the odd composite number and it is not the perfect square also.
- If we divide 1629 by 1, 3, 9, 181, 543 and 1629 then we get remainder as zero. Hence, 1, 3, 9, 181, 543 and 1629 are the factors of 1629
Note:
- 1629 is not the perfect square.
- Factors of 1629: 1, 3, 9, 181, 543 and 1629
- Prime factors of 1629: 3, 181
Conclusion:
- 1629 is the composite number which has factors 1, 3, 9, 181, 543 and 1629.
- And hence, 1629 is not the prime number.
Multiple Choice Questions:
1) 1629 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 1629 are
a) 1
b) 3, 181
c) 1, 9, 543 and 1629
d) 1, 3, 9, 181, 543 and 1629
Ans: b) 1, 9, 543 and 1629
3) 1629 is the odd composite number because
a) It has factors 1, 3, 9, 181, 543 and 1629
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all