Is 545 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 545 is composite or not first we have to find its factors.
Contents
Factors of 545:
- If we have taken numbers from 1, 2, 3…for checking factors of 545, we found that 545 has factors 1, 5, 109 and 545. Hence, we must say that 545 is a composite number.
- Thus, 545 is the composite number.
- If we multiply 545 by 1, 2, 3 then we get the multiples of 545 which are 545, 1090 and so on.
545 is a Composite number or Prime number
About the number 545:
- 545 has more than two factors which are 1, 5, 109 and 545 and hence it is the composite number.
- 545 is the odd composite number and it is not the perfect square also.
- If we divide 545 by 1, 5, 109 and 545 then we get remainder as zero. Hence, 1, 5, 109 and 545 are the factors of 545.
Note:
- 545 is not the perfect square.
- Factors of 545: 1, 5, 109 and 545
- Prime factors of 545: 5, 109
Conclusion:
- 545 is the composite number which has factors 1, 5, 109 and 545.
- And hence, 545 is not the prime number.
Multiple Choice Questions:
1) 545 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 545 are
a) 1
b) 5, 109
c) 1 and 545
d) 1, 5, 109 and 545
Ans: b) 5, 109
3) 545 is the odd composite number because
a) It has factors 1, 5, 109 and 545
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c