Is 4720 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 4720 is composite or not first we have to find its factors.
Contents
Factors of 4720:
- If we have taken numbers from 1, 2, 3…for checking factors of 4720 we found that 4720 has factors 1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720. Hence, we must say that 4720 is a composite number.
- Thus, 4720 is the composite number.
- If we multiply 4720 by 1, 2, 3 then we get the multiples of 4720 which are 4720, 9440 and so on.
About the number 4720:
- 4720 has more than two factors which are 1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720 and hence it is the composite number.
- 4720 is the even composite number and it is not the perfect square also.
- If we divide 4720 by, 1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720 then we get remainder as zero. Hence, 1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720 are the factors of 4720.
Note:
- 4720 is not the perfect square.
- Factors of 4720: 1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720
- Prime factors of 4720: 2, 5, 59
Conclusion:
- 4720 is the composite number which has factors, 1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720
- And hence, 4720 is not the prime number.
Multiple Choice Questions:
1) 4720 is a
a) Prime number
b) even number
c) even Composite number
d) Both a and c
Ans: c) even composite number
2) The prime factors of a composite number 4720 are
a) 4720
b) 2, 5, 59
c) 4, 8, 10, 16, 20, 40, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720
d) 1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720
Ans: b) 2, 5, 59
3) 4720 is even composite number because
a) It has factors 1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360 and 4720
b) It has more than two factors
c) Divisible by 2
d) all
Ans: d) all