Is 2639 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 2639 is composite or not first we have to find its factors.
Contents
Factors of 2639:
- If we have taken numbers from 1, 2, 3…for checking factors of 2639, we found that 2639 has factors 1, 7, 13, 29, 91, 203, 377 and 2639. Hence, we must say that 2639 is a composite number.
- Thus, 2639 is the composite number.
- If we multiply 2639 by 1, 2, 3 then we get the multiples of 2639 which are 2639, 5278 and so on.
2639 is a Composite number or Prime number
About the number 2639:
- 2639 has more than two factors which are 1, 7, 13, 29, 91, 203, 377 and 2639 and hence it is the composite number.
- 2639 is the odd composite number and it is not the perfect square also.
- If we divide 2639 by 1, 7, 13, 29, 91, 203, 377 and 2639 then we get remainder as zero. Hence 1, 7, 13, 29, 91, 203, 377 and 2639 are the factors of 2639
Note:
- 2639 is not the perfect square.
- Factors of 2639: 1, 7, 13, 29, 91, 203, 377 and 2639
- Prime factors of 2639: 7, 13, 29
Conclusion:
- 2639 is the composite number which has factors 1, 7, 13, 29, 91, 203, 377 and 2639.
- And hence, 2639 is not the prime number.
Multiple Choice Questions:
1) 2639 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 2639 are
a) 1
b) 7, 13, 29
c) 1 and 2639
d) 1, 7, 13, 29, 91, 203, 377 and 2639
Ans: b) 7, 13, 29
3) 2639 is the composite number because
a) It has factors 1, 7, 13, 29, 91, 203, 377 and 2639
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