Is 2485 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 2485 is composite or not first we have to find its factors.
Contents
Factors of 2485:
- If we have taken numbers from 1, 2, 3…for checking factors of 2485, we found that 2485 has factors 1, 5, 7, 35, 71, 355, 497 and 2485. Hence, we must say that 2485 is a composite number.
- Thus, 2485 is the composite number.
- If we multiply 2485 by 1, 2, 3 then we get the multiples of 2485 which are 2485, 4970 and so on.
2485 is a Composite number or Prime number
About the number 2485:
- 2485 has more than two factors which are 1, 5, 7, 35, 71, 355, 497 and 2485 and hence it is the composite number.
- 2485 is the odd composite number and it is not the perfect square also.
- If we divide 2485 by 1, 5, 7, 35, 71, 355, 497 and 2485 then we get remainder as zero. Hence 1, 5, 7, 35, 71, 355, 497 and 2485 are the factors of 2485
Note:
- 2485 is not the perfect square.
- Factors of 2485: 1, 5, 7, 35, 71, 355, 497 and 2485
- Prime factors of 2485: 5, 7, 71
Conclusion:
- 2485 is the composite number which has factors 1, 5, 7, 35, 71, 355, 497 and 2485.
- And hence, 2485 is not the prime number.
Multiple Choice Questions:
1) 2485 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 2485 are
a) 1
b) 5, 7, 71
c) 1 and 2485
d) 1, 5, 7, 35, 71, 355, 497 and 2485
Ans: b) 5, 7, 71
3) 2485 is the composite number because
a) It has factors 1, 5, 7, 35, 71, 355, 497 and 2485
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