Is 3885 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 3885 is composite or not first we have to find its factors.
Contents
Factors of 3885:
- If we have taken numbers from 1, 2, 3…for checking factors of 3885, we found that 3885 has factors 1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295 and 3885. Hence, we must say that 3885 is a composite number.
- Thus, 3885 is the composite number.
- If we multiply 3885 by 1, 2, 3 then we get the multiples of 3885 which are 3885, 7770 and so on.
3885 is a Composite number or Prime number
About the number 3885:
- 3885 has more than two factors which are 1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295 and 3885 and hence it is the composite number.
- 3885 is the odd composite number and it is not the perfect square also.
- If we divide 3885 by 1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295 and 3885 then we get remainder as zero. Hence 1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295 and 3885 are the factors of 3885
Note:
- 3885 is not the perfect square.
- Factors of 3885:1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295 and 3885
- Prime factors of 3885: 3, 5, 7, 37
Conclusion:
- 3885 is the composite number which has factors 1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295 and 3885.
- And hence, 3885 is not the prime number.
Multiple Choice Questions:
1) 3885 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 3885 are
a) 1
b) 3, 5, 7, 37
c) 1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295 and 3885
d) 1, 15, 21, 35, 105, 111, 185, 259, 555, 777, 1295 and 3885
Ans: d) 1, 15, 21, 35, 105, 111, 185, 259, 555, 777, 1295 and 3885
3) 3885 is the odd composite number because
a) It has factors 1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295 and 3885
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all
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