Is 2431 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 2431 is composite or not first we have to find its factors.
Contents
Factors of 2431:
- If we have taken numbers from 1, 2, 3…for checking factors of 2431, we found that 2431 has factors 1, 11, 13, 17, 143, 187, 221 and 2431. Hence, we must say that 2431 is a composite number.
- Thus, 2431 is the composite number.
- If we multiply 2431 by 1, 2, 3 then we get the multiples of 2431 which are 2431, 4862 and so on.
2431 is a Composite number or Prime number
About the number 2431:
- 2431 has more than two factors which are 1, 11, 13, 17, 143, 187, 221 and 2431 and hence it is the composite number.
- 2431 is the odd composite number and it is not the perfect square also.
- If we divide 2431 by 1, 11, 13, 17, 143, 187, 221 and 2431 then we get remainder as zero. Hence, 1, 11, 13, 17, 143, 187, 221 and 2431 are the factors of 2431
Note:
- 2431 is not the perfect square.
- Factors of 2431: 1, 11, 13, 17, 143, 187, 221 and 2431
- Prime factors of 2431: 11, 13, 17
Conclusion:
- 2431 is the composite number which has factors 1, 11, 13, 17, 143, 187, 221 and 2431.
- And hence, 2431 is not the prime number.
Multiple Choice Questions:
1) 2431 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 2431 are
a) 1
b) 11, 13, 17
c) 1 and 2431
d) 1, 11, 13, 17, 143, 187, 221 and 2431
Ans: b) 11, 13, 17
3) 2431 is the composite number because
a) It has factors 1, 11, 13, 17, 143, 187, 221 and 2431
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