Is 3125 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 3125 is composite or not first we have to find its factors.
Contents
Factors of 3125:
- If we have taken numbers from 1, 2, 3…for checking factors of 3125, we found that 3125 has factors 1, 5, 25, 125, 625 and 3125. Hence, we must say that 3125 is a composite number.
- Thus, 3125 is the composite number.
- If we multiply 3125 by 1, 2, 3 then we get the multiples of 3125 which are 3125, 6250 and so on.
3125 is a Composite number or Prime number
About the number 3125:
- 3125 has more than two factors which are 1, 5, 25, 125, 625 and 3125 and hence it is the composite number.
- 3125 is the odd composite number and it is not the perfect square also.
- If we divide 3125 by 1, 5, 25, 125, 625 and 3125 then we get remainder as zero. Hence 1, 5, 25, 125, 625 and 3125 are the factors of 3125
Note:
- 3125 is not the perfect square.
- Factors of 3125: 1, 5, 25, 125, 625 and 3125
- Prime factors of 3125: 5
Conclusion:
- 3125 is the composite number which has factors 1, 5, 25, 125, 625 and 3125.
- And hence, 3125 is not the prime number.
Multiple Choice Questions:
1) 3125 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 3125 are
a) 1
b) 5
c) 1, 5, 25, 125, 625 and 3125
d) 1, 25, 125, 625 and 3125
Ans: d) 1, 25, 125, 625 and 3125
3) 3125 is the odd composite number because
a) It has factors 1, 5, 25, 125, 625 and 3125
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all
Why the below numbers are composite numbers
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