Is 3285 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 3285 is composite or not first we have to find its factors.
Contents
Factors of 3285:
- If we have taken numbers from 1, 2, 3…for checking factors of 3285, we found that 3285 has factors 1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095 and 3285. Hence, we must say that 3285 is a composite number.
- Thus, 3285 is the composite number.
- If we multiply 3285 by 1, 2, 3 then we get the multiples of 3285 which are 3285, 6570 and so on.
3285 is a Composite number or Prime number
About the number 3285:
- 3285 has more than two factors which are 1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095 and 3285 and hence it is the composite number.
- 3285 is the odd composite number and it is not the perfect square also.
- If we divide 3285 by 1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095 and 3285 then we get remainder as zero. Hence 1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095 and 3285 are the factors of 3285
Note:
- 3285 is not the perfect square.
- Factors of 3285: 1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095 and 3285
- Prime factors of 3285: 3, 5, 73
Conclusion:
- 3285 is the composite number which has factors 1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095 and 3285.
- And hence, 3285 is not the prime number.
Multiple Choice Questions:
1) 3285 is a
a) odd number
b) Prime number
c) even number
d) Both a and c
Ans: a) odd number
2) The non-prime factors of a composite number 3285 are
a) 1
b) 3, 5, 73
c) 1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095 and 3285
d) 1, 9, 15, 45, 219, 365, 657, 1095 and 3285
Ans: d) 1, 9, 15, 45, 219, 365, 657, 1095 and 3285
3) 3285 is the odd composite number because
a) It has factors 1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095 and 3285
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all
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