Is 771 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 771 is composite or not first we have to find its factors.
Contents
Factors of 771:
- If we have taken numbers from 1, 2, 3…for checking factors of 771, we found that 771 has factors 1, 3, 257 and 771. Hence, we must say that 771 is a composite number.
- Thus, 771 is the composite number.
- If we multiply 771 by 1, 2, 3 then we get the multiples of 771 which are 771, 1542 and so on.
771 is a Composite number or Prime number
About the number 771:
- 771 has more than two factors which are 1, 3, 257 and 771 and hence it is the composite number.
- 771 is the odd composite number and it is not the perfect square also.
- If we divide 771 by 1, 3, 257 and 771 then we get remainder as zero. Hence, 1, 3, 257 and 771 are the factors of 771
Note:
- 771 is not the perfect square.
- Factors of 771: 1, 3, 257 and 771
- Prime factors of 771: 3, 257
Conclusion:
- 771 is the composite number which has factors 1, 3, 257 and 771.
- And hence, 771 is not the prime number.
Multiple Choice Questions:
1) 771 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 771 are
a) 1
b) 3, 257
c) 1 and 771
d) 1, 3, 257 and 771
Ans: b) 3, 257
3) 771 is the odd composite number because
a) It has factors 1, 3, 257 and 771
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c