Is 1265 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 1265 is composite or not first we have to find its factors.
Contents
Factors of 1265:
- If we have taken numbers from 1, 2, 3…for checking factors of 1265, we found that 1265 has factors 1, 5, 11, 23, 55, 115, 253 and 1265. Hence, we must say that 1265 is a composite number.
- Thus, 1265 is the composite number.
- If we multiply 1265 by 1, 2, 3 then we get the multiples of 1265 which are 1265, 2530 and so on.
1265 is a Composite number or Prime number
About the number 1265:
- 1265 has more than two factors which are 1, 5, 11, 23, 55, 115, 253 and 1265 and hence it is the composite number.
- 1265 is the odd composite number and it is not the perfect square also.
- If we divide 1265 by 1, 5, 11, 23, 55, 115, 253 and 1265 then we get remainder as zero. Hence, 1, 5, 11, 23, 55, 115, 253 and 1265 are the factors of 1265
Note:
- 1265 is not the perfect square.
- Factors of 1265: 1, 5, 11, 23, 55, 115, 253 and 1265
- Prime factors of 1265: 5, 11, 23
Conclusion:
- 1265 is the composite number which has factors 1, 5, 11, 23, 55, 115, 253 and 1265.
- And hence, 1265 is not the prime number.
Multiple Choice Questions:
1) 1265 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 1265 are
a) 1
b) 5, 11, 23
c) 1, 55, 115, 253 and 1265
d) 1, 5, 11, 23, 55, 115, 253 and 1265
Ans: b) 1, 55, 115, 253 and 1265
3) 1265 is the odd composite number because
a) It has factors 1, 5, 11, 23, 55, 115, 253 and 1265
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all