Is 2345 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 2345 is composite or not first we have to find its factors.
Contents
Factors of 2345:
- If we have taken numbers from 1, 2, 3…for checking factors of 2345, we found that 2345 has factors 1, 5, 7, 35, 67, 335, 469 and 2345. Hence, we must say that 2345 is a composite number.
- Thus, 2345 is the composite number.
- If we multiply 2345 by 1, 2, 3 then we get the multiples of 2345 which are 2345, 4690 and so on.
2345 is a Composite number or Prime number
About the number 2345:
- 2345 has more than two factors which are 1, 5, 7, 35, 67, 335, 469 and 2345 and hence it is the composite number.
- 2345 is the odd composite number and it is not the perfect square also.
- If we divide 2345 by 1, 5, 7, 35, 67, 335, 469 and 2345 then we get remainder as zero. Hence, 1, 5, 7, 35, 67, 335, 469 and 2345 are the factors of 2345
Note:
- 2345 is not the perfect square.
- Factors of 2345: 1, 5, 7, 35, 67, 335, 469 and 2345
- Prime factors of 2345: 5, 7, 67
Conclusion:
- 2345 is the composite number which has factors 1, 5, 7, 35, 67, 335, 469 and 2345.
- And hence, 2345 is not the prime number.
Multiple Choice Questions:
1) 2345 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 2345 are
a) 1
b) 5, 7, 67
c) 1 and 2345
d) 1, 5, 7, 35, 67, 335, 469 and 2345
Ans: b) 5, 7, 67
3) 2345 is the composite number because
a) It has factors 1, 5, 7, 35, 67, 335, 469 and 2345
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