Is 2865 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 2865 is composite or not first we have to find its factors.
Contents
Factors of 2865:
- If we have taken numbers from 1, 2, 3…for checking factors of 2865, we found that 2865 has factors 1, 3, 5, 15, 191, 573, 955 and 2865. Hence, we must say that 2865 is a composite number.
- Thus, 2865 is the composite number.
- If we multiply 2865 by 1, 2, 3 then we get the multiples of 2865 which are 2865, 5730 and so on.
2865 is a Composite number or Prime number
About the number 2865:
- 2865 has more than two factors which are 1, 3, 5, 15, 191, 573, 955 and 2865 and hence it is the composite number.
- 2865 is the odd composite number and it is not the perfect square also.
- If we divide 2865 by 1, 3, 5, 15, 191, 573, 955 and 2865 then we get remainder as zero. Hence 1, 3, 5, 15, 191, 573, 955 and 2865 are the factors of 2865
Note:
- 2865 is not the perfect square.
- Factors of 2865: 1, 3, 5, 15, 191, 573, 955 and 2865
- Prime factors of 2865: 3, 5, 191
Conclusion:
- 2865 is the composite number which has factors 1, 3, 5, 15, 191, 573, 955 and 2865.
- And hence, 2865 is not the prime number.
Multiple Choice Questions:
1) 2865 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 2865 are
a) 1
b) 3, 5, 191
c) 1, 3, 5, 15, 191, 573, 955 and 2865
d) 1, 15, 573, 955 and 2865
Ans: d) 1, 15, 573, 955 and 2865
3) 2865 is the odd composite number because
a) It has factors 1, 3, 5, 15, 191, 573, 955 and 2865
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all