Is 2778 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 2778 is composite or not first we have to find its factors.
Contents
Factors of 2778:
- If we have taken numbers from 1, 2, 3…for checking factors of 2778, we found that 2778 has factors 1, 2, 3, 6, 463, 926, 1389 and 2778. Hence, we must say that 2778 is a composite number.
- Thus, 2778 is the composite number.
- If we multiply 2778 by 1, 2, 3 then we get the multiples of 2778 which are 2778, 5556 and so on.
About the number 2778:
- 2778 has more than two factors which are 1, 2, 3, 6, 463, 926, 1389 and 2778 and hence it is the composite number.
- 2778 is the even composite number and it is not the perfect square also.
- If we divide 2778 by, 1, 2, 3, 6, 463, 926, 1389 and 2778 then we get remainder as zero. Hence, 1, 2, 3, 6, 463, 926, 1389 and 2778 are the factors of 2778.
Note:
- 2778 is not the perfect square.
- Factors of 2778: 1, 2, 3, 6, 463, 926, 1389 and 2778
- Prime factors of 2778: 2, 3, 463
Conclusion:
- 2778 is the composite number which has factors, 1, 2, 3, 6, 463, 926, 1389 and 2778
- And hence, 2778 is not the prime number.
Multiple Choice Questions:
1) 2778 is a
a) Prime number
b) Odd number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The composite factors of a composite number 2778 are
a) 2778
b) 2, 3, 463
c) 6, 926, 1389 and 2778
d) 1, 2, 3, 6, 463, 926, 1389 and 2778
Ans: c) 6, 926, 1389 and 2778
3) 2778 is even composite number because
a) It has factors 1, 2, 3, 6, 463, 926, 1389 and 2778
b) It has only two factors
c) Divisible by 2
d) Both a and c
Ans: d) both a and c