Is 4785 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 4785 is composite or not first we have to find its factors.
Contents
Factors of 4785:
- If we have taken numbers from 1, 2, 3…for checking factors of 4785, we found that 4785 has factors 1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785. Hence, we must say that 4785 is a composite number.
- Thus, 4785 is the composite number.
- If we multiply 4785 by 1, 2, 3 then we get the multiples of 4785 which are 4785, 9570 and so on.
4785 is a Composite number or Prime number
About the number 4785:
- 4785 has more than two factors which 1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785 are hence it is the composite number.
- 4785 is the odd composite number and it is not the perfect square also.
- If we divide 4785 by 1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785 then we get remainder as zero. Hence 1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785 are the factors of 4785.
Note:
- 4785 is not the perfect square.
- Factors of 4785:1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785
- Prime factors of 4785:3, 5, 11, 29
Conclusion:
- 4785 is the composite number which has factors 1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785.
- And hence, 4785 is not the prime number.
Multiple Choice Questions:
1) 4785 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2)The prime factors of a composite number 4785 are
a) 1
b) 3, 5, 11, 29
c) 1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785
d) 1, 15, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785
Ans: b) 3, 5, 11, 29
3) 4785 is the composite number because
a) It has factors 1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595 and 4785
b) It has more than two factors
c) It is not divisible by 2
d) Both a and b
Ans: d) both a and b
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