Is 1398 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 1398 is composite or not first we have to find its factors.
Contents
Factors of 1398:
- If we have taken numbers from 1, 2, 3…for checking factors of 1398, we found that 1398 has factors 1, 2, 3, 6, 233, 466, 699 and 1398. Hence, we must say that 1398 is a composite number.
- Thus, 1398 is the composite number.
- If we multiply 1398 by 1, 2, 3 then we get the multiples of 1398 which are 1398, 2796 and so on.
About the number 1398:
- 1398 has more than two factors which are 1, 2, 3, 6, 233, 466, 699 and 1398 and hence it is the composite number.
- 1398 is the even composite number and it is not the perfect square also.
- If we divide 1398 by 1, 2, 3, 6, 233, 466, 699 and 1398 then we get remainder as zero. Hence, 1, 2, 3, 6, 233, 466, 699 are the factors of 1398.
Note:
- 1398 is not the perfect square.
- Factors of 1398: 1, 2, 3, 6, 233, 466, 699 and 1398
- Prime factors of 1398: 2, 3, 233
Conclusion:
- 1398 is the composite number which has factors 1, 2, 3, 6, 233, 466, 699 and 1398
- And hence, 1398 is not the prime number.
Multiple Choice Questions:
1) 1398 is a
a) Even number
b) Not a perfect square number
c) Composite number
d) all
Ans: d) all
2) The composite factors of a composite number 1398 are
a) 6, 466, 699 and 1398
b) 2, 3, 233
c) 1, 6, 466, 699 and 1398
d) 1, 2, 3, 6, 233, 466, 699 and 1398
Ans: a) 6, 466, 699 and 1398
3) 1398 is composite number because
a) It has factors 1, 2, 3, 6, 233, 466, 699 and 1398
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b