Is 1573 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 1573 is composite or not first we have to find its factors.
Contents
Factors of 1573:
- If we have taken numbers from 1, 2, 3…for checking factors of 1573, we found that 1573 has factors 1, 11, 13, 121, 143 and 1573. Hence, we must say that 1573 is a composite number.
- Thus, 1573 is the composite number.
- If we multiply 1573 by 1, 2, 3 then we get the multiples of 1573 which are 1573, 3146 and so on.
1573 is a Composite number or Prime number
About the number 1573:
- 1573 has more than two factors which are 1, 11, 13, 121, 143 and 1573 and hence it is the composite number.
- 1573 is the odd composite number and it is not the perfect square also.
- If we divide 1573 by 1, 11, 13, 121, 143 and 1573 then we get remainder as zero. Hence, 1, 11, 13, 121, 143 and 1573 are the factors of 1573
Note:
- 1573 is not the perfect square.
- Factors of 1573: 1, 11, 13, 121, 143 and 1573
- Prime factors of 1573: 11, 13
Conclusion:
- 1573 is the composite number which has factors 1, 11, 13, 121, 143 and 1573.
- And hence, 1573 is not the prime number.
Multiple Choice Questions:
1) 1573 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 1573 are
a) 1
b) 11, 13
c) 1, 121, 143 and 1573
d) 1, 11, 13, 121, 143 and 1573
Ans: b) 1, 121, 143 and 1573
3) 1573 is the odd composite number because
a) It has factors 1, 11, 13, 121, 143 and 1573
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all