Is 2660 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 2660 is composite or not first we have to find its factors.
Contents
Factors of 2660:
- If we have taken numbers from 1, 2, 3…for checking factors of 2660, we found that 2660 has factors 1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660. Hence, we must say that 2660 is a composite number.
- Thus, 2660 is the composite number.
- If we multiply 2660 by 1, 2, 3 then we get the multiples of 2660 which are 2660, 5320 and so on.
About the number 2660:
- 2660 has more than two factors which are 1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660 and hence it is the composite number.
- 2660 is the even composite number and it is not the perfect square also.
- If we divide 2660 by, 1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660 then we get remainder as zero. Hence, 1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660 are the factors of 2660.
Note:
- 2660 is not the perfect square.
- Factors of 2660: 1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660
- Prime factors of 2660: 2, 5, 7, 19
Conclusion:
- 2660 is the composite number which has factors, 1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660
- And hence, 2660 is not the prime number.
Multiple Choice Questions:
1) 2660 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 2660 are
a) 2660
b) 2, 5, 7, 19
c) 4, 10, 14, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660
d) 1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660
Ans: c) 4, 10, 14, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660
3) 2660 is even composite number because
a) It has factors 1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330 and 2660
b) It has only two factors
c) Divisible by 2
d) Both a and c
Ans: d) both a and c