Is 418 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 418 is composite or not first we have to find its factors.
Contents
Factors of 418:
- If we have taken numbers from 1, 2, 3…for checking factors of 418, we found that 418 has factors 1, 2, 11, 19, 22, 38, 209 and 418. Hence, we must say that 418 is a composite number.
- Thus, 418 is the composite umber.
- If we multiply 418 by 1, 2, 3 then we get the multiples of 418 which are 418, 836 and so on.
About the number 418:
- 418 has more than two factors which are 1, 2, 11, 19, 22, 38, 209 and 418 and hence it is the composite number.
- 418 is the even composite number and it is not the perfect square also.
- If we divide 418 by 1, 2, 11, 19, 22, 38, 209 and 418 then we get remainder as zero. Hence, 1, 2, 11, 19, 22, 38, 209 and 418 are the factors of 418.
Note:
- 418 is not the perfect square.
- Factors of 418: 1, 2, 11, 19, 22, 38, 209 and 418
- Prime factors of 418: 2, 11, 19
Conclusion:
- 418 is the composite number which has factors 1, 2, 11, 19, 22, 38, 209
- And hence, 418 is not the prime number.
Multiple Choice Questions:
1) 418 is a
a) Prime number
b) Odd number
c) Composite number
d) Both b and c
Ans: c) composite number
2) The prime factors of a composite number 418 are
a) 2
b) 2, 11, 19
c) 1, 22, 38, 209 and 418
d) 1, 2, 11, 19, 22, 38, 209 and 418
Ans: c) 2, 11, 19
3) 418 is the even composite number because
a) It has two factors
b) More than two factors
c) Divisible by 2
d) Both b and c
Ans: d) both b and c