Is 1771 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 1771 is composite or not first we have to find its factors.
Contents
Factors of 1771:
- If we have taken numbers from 1, 2, 3…for checking factors of 1771, we found that 1771 has factors 1, 7, 11, 23, 77, 161, 253 and 1771. Hence, we must say that 1771 is a composite number.
- Thus, 1771 is the composite number.
- If we multiply 1771 by 1, 2, 3 then we get the multiples of 1771 which are 1771, 3542 and so on.
1771 is a Composite number or Prime number
About the number 1771:
- 1771 has more than two factors which are 1, 7, 11, 23, 77, 161, 253 and 1771 and hence it is the composite number.
- 1771 is the odd composite number and it is not the perfect square also.
- If we divide 1771 by 1, 7, 11, 23, 77, 161, 253 and 1771 then we get remainder as zero. Hence, 1, 7, 11, 23, 77, 161, 253 and 1771 are the factors of 1771
Note:
- 1771 is not the perfect square.
- Factors of 1771: 1, 7, 11, 23, 77, 161, 253 and 1771
- Prime factors of 1771: 7, 11, 23
Conclusion:
- 1771 is the composite number which has factors 1, 7, 11, 23, 77, 161, 253 and 1771.
- And hence, 1771 is not the prime number.
Multiple Choice Questions:
1) 1771 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 1771 are
a) 1
b) 7, 11, 23
c) 1, 77, 161, 253 and 1771
d) 1, 7, 11, 23, 77, 161, 253 and 1771
Ans: b) 1, 77, 161, 253 and 1771
3) 1771 is the odd composite number because
a) It has factors 1, 7, 11, 23, 77, 161, 253 and 1771
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all