Is 2775 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 2775 is composite or not first we have to find its factors.
Contents
Factors of 2775:
- If we have taken numbers from 1, 2, 3…for checking factors of 2775, we found that 2775 has factors 1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925 and 2775. Hence, we must say that 2775 is a composite number.
- Thus, 2775 is the composite number.
- If we multiply 2775 by 1, 2, 3 then we get the multiples of 2775 which are 2775, 5550 and so on.
2775 is a Composite number or Prime number
About the number 2775:
- 2775 has more than two factors which are 1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925 and 2775 and hence it is the composite number.
- 2775 is the odd composite number and it is not the perfect square also.
- If we divide 2775 by 1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925 and 2775 then we get remainder as zero. Hence 1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925 and 2775 are the factors of 2775
Note:
- 2775 is not the perfect square.
- Factors of 2775: 1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925 and 2775
- Prime factors of 2775: 3, 5, 37
Conclusion:
- 2775 is the composite number which has factors 1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925 and 2775.
- And hence, 2775 is not the prime number.
Multiple Choice Questions:
1) 2775 is a
a) odd number
b) Prime number
c) even number
d) Both a and c
Ans: a) odd number
2) The non-prime factors of a composite number 2775 are
a) 1
b) 3, 5, 37
c) 1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925 and 2775
d) 1, 15, 25, 75, 111, 185, 555, 925 and 2775
Ans: d) 1, 15, 25, 75, 111, 185, 555, 925 and 2775
3) 2775 is the odd composite number because
a) It has factors 1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925 and 2775
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all