Is 1547 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 1547 is composite or not first we have to find its factors.
Contents
Factors of 1547:
- If we have taken numbers from 1, 2, 3…for checking factors of 1547, we found that 1547 has factors 1, 7, 13, 17, 91, 119, 221 and 1547. Hence, we must say that 1547 is a composite number.
- Thus, 1547 is the composite number.
- If we multiply 1547 by 1, 2, 3 then we get the multiples of 1547 which are 1547, 3094 and so on.
1547 is a Composite number or Prime number
About the number 1547:
- 1547 has more than two factors which are 1, 7, 13, 17, 91, 119, 221 and 1547 and hence it is the composite number.
- 1547 is the odd composite number and it is not the perfect square also.
- If we divide 1547 by 1, 7, 13, 17, 91, 119, 221 and 1547 then we get remainder as zero. Hence, 1, 7, 13, 17, 91, 119, 221 and 1547 are the factors of 1547
Note:
- 1547 is not the perfect square.
- Factors of 1547: 1, 7, 13, 17, 91, 119, 221 and 1547
- Prime factors of 1547: 7, 13, 17
Conclusion:
- 1547 is the composite number which has factors 1, 7, 13, 17, 91, 119, 221 and 1547.
- And hence, 1547 is not the prime number.
Multiple Choice Questions:
1) 1547 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 1547 are
a) 1
b) 7, 13, 17
c) 1, 91, 119, 221 and 1547
d) 1, 7, 13, 17, 91, 119, 221 and 1547
Ans: b) 1, 91, 119, 221 and 1547
3) 1547 is the odd composite number because
a) It has factors 1, 7, 13, 17, 91, 119, 221 and 1547
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all