Is 1457 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 1457 is composite or not first we have to find its factors.
Contents
Factors of 1457:
- If we have taken numbers from 1, 2, 3…for checking factors of 1457, we found that 1457 has factors 1, 31, 47 and 1457. Hence, we must say that 1457 is a composite number.
- Thus, 1457 is the composite number.
- If we multiply 1457 by 1, 2, 3 then we get the multiples of 1457 which are 1457, 2914 and so on.
1457 is a Composite number or Prime number
About the number 1457:
- 1457 has more than two factors which are 1, 31, 47 and 1457 and hence it is the composite number.
- 1457 is the odd composite number and it is not the perfect square also.
- If we divide 1457 by 1, 31, 47 and 1457 then we get remainder as zero. Hence, 1, 31, 47 and 1457 are the factors of 1457
Note:
- 1457 is not the perfect square.
- Factors of 1457: 1, 31, 47 and 1457
- Prime factors of 1457: 31, 47
Conclusion:
- 1457 is the composite number which has factors 1, 31, 47 and 1457.
- And hence, 1457 is not the prime number.
Multiple Choice Questions:
1) 1457 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 1457 are
a) 1
b) 31, 47
c) 1 and 1457
d) 1, 31, 47 and 1457
Ans: b) 1 and 1457
3) 1457 is the odd composite number because
a) It has factors 1, 31, 47 and 1457
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all