Is 2905 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 2905 is composite or not first we have to find its factors.
Contents
Factors of 2905:
- If we have taken numbers from 1, 2, 3…for checking factors of 2905, we found that 2905 has factors 1, 5, 7, 35, 83, 415, 581 and 2905. Hence, we must say that 2905 is a composite number.
- Thus, 2905 is the composite number.
- If we multiply 2905 by 1, 2, 3 then we get the multiples of 2905 which are 2905, 5810 and so on.
2905 is a Composite number or Prime number
About the number 2905:
- 2905 has more than two factors which are 1, 5, 7, 35, 83, 415, 581 and 2905 and hence it is the composite number.
- 2905 is the odd composite number and it is not the perfect square also.
- If we divide 2905 by 1, 5, 7, 35, 83, 415, 581 and 2905 then we get remainder as zero. Hence 1, 5, 7, 35, 83, 415, 581 and 2905 are the factors of 2905
Note:
- 2905 is not the perfect square.
- Factors of 2905: 1, 5, 7, 35, 83, 415, 581 and 2905
- Prime factors of 2905: 5, 7, 83
Conclusion:
- 2905 is the composite number which has factors 1, 5, 7, 35, 83, 415, 581 and 2905.
- And hence, 2905 is not the prime number.
Multiple Choice Questions:
1) 2905 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 2905 are
a) 1
b) 5, 7, 83
c) 1, 5, 7, 35, 83, 415, 581 and 2905
d) 1, 35, 415, 581 and 2905
Ans: d) 1, 35, 415, 581 and 2905
3) 2905 is the odd composite number because
a) It has factors 1, 5, 7, 35, 83, 415, 581 and 2905
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all