Is 4905 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 4905 is composite or not first we have to find its factors.
Contents
Factors of 4905:
- If we have taken numbers from 1, 2, 3…for checking factors of 4905, we found that 4905 has factors 1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635 and 4905. Hence, we must say that 4905 is a composite number.
- Thus, 4905 is the composite number.
- If we multiply 4905 by 1, 2, 3 then we get the multiples of 4905 which are 4905, 9810 and so on.
4905 is a Composite number or Prime number
About the number 4905:
- 4905 has more than two factors which 1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635 and 4905 are hence it is the composite number.
- 4905 is the odd composite number and it is not the perfect square also.
- If we divide 4905 by 1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635 and 4905 then we get remainder as zero. Hence 1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635 and 4905 are the factors of 4905.
Note:
- 4905 is not the perfect square.
- Factors of 4905:1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635 and 4905
- Prime factors of 4905:3, 5, 109
Conclusion:
- 4905 is the composite number which has factors 1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635 and 4905.
- And hence, 4905 is not the prime number.
Multiple Choice Questions:
1) 4905 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 4905 are
a) 1
b) 3, 5, 109
c) 1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635 and 4905
d) 1, 9, 15, 45, 327, 545, 981, 1635 and 4905
Ans: b) 3, 5, 109
3) 4905 is the composite number because
a) It has factors 1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635 and 4905
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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