Is 1431 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 1431 is composite or not first we have to find its factors.
Contents
Factors of 1431:
- If we have taken numbers from 1, 2, 3…for checking factors of 1431, we found that 1431 has factors 1, 3, 9, 27, 53, 159, 477 and 1431. Hence, we must say that 1431 is a composite number.
- Thus, 1431 is the composite number.
- If we multiply 1431 by 1, 2, 3 then we get the multiples of 1431 which are 1431, 2862 and so on.
1431 is a Composite number or Prime number
About the number 1431:
- 1431 has more than two factors which are 1, 3, 9, 27, 53, 159, 477 and 1431 and hence it is the composite number.
- 1431 is the odd composite number and it is not the perfect square also.
- If we divide 1431 by 1, 3, 9, 27, 53, 159, 477 and 1431 then we get remainder as zero. Hence, 1, 3, 9, 27, 53, 159, 477 and 1431 are the factors of 1431
Note:
- 1431 is not the perfect square.
- Factors of 1431: 1, 3, 9, 27, 53, 159, 477 and 1431
- Prime factors of 1431: 3, 53
Conclusion:
- 1431 is the composite number which has factors 1, 3, 9, 27, 53, 159, 477 and 1431.
- And hence, 1431 is not the prime number.
Multiple Choice Questions:
1) 1431 is a
a) Even number
b) Prime number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The non-prime factors of a composite number 1431 are
a) 1
b) 3, 53
c) 1, 9, 27, 159, 477 and 1431
d) 1, 3, 9, 27, 53, 159, 477 and 1431
Ans: b) 1, 9, 27, 159, 477 and 1431
3) 1431 is the odd composite number because
a) It has factors 1, 3, 9, 27, 53, 159, 477 and 1431
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all