Is 4890 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 4890 is composite or not first we have to find its factors.
Contents
Factors of 4890:
- If we have taken numbers from 1, 2, 3…for checking factors of 4890 we found that 4890 has factors 1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445 and 4890. Hence, we must say that 4890 is a composite number.
- Thus, 4890 is the composite number.
- If we multiply 4890 by 1, 2, 3 then we get the multiples of 4890 which are 4890, 9780 and so on.
About the number 4890:
- 4890 has more than two factors which are 1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445 and 4890 and hence it is the composite number.
- 4890 is the even composite number and it is not the perfect square also.
- If we divide 4890 by, 1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445 and 4890 then we get remainder as zero. Hence, 1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445 and 4890 are the factors of 4890.
Note:
- 4890 is not the perfect square.
- Factors of 4890: 1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445 and 4890
- Prime factors of 4890: 2, 3, 5, 163
Conclusion:
- 4890 is the composite number which has factors, 1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445 and 4890
- And hence, 4890 is not the prime number.
Multiple Choice Questions:
1) 4890 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 4890 are
a) 4890
b) 2, 3, 5, 163
c) 6, 10, 15, 30, 326, 489, 815, 978, 1630, 2445 and 4890
d) 1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445 and 4890
Ans: b) 2, 3, 5, 163
3) 4890 is even composite number because
a) It has factors 1, 2, 3, 5, 6, 10, 15, 30, 163, 326, 489, 815, 978, 1630, 2445 and 4890
b) It has more than two factors
c) Divisible by 2
d) all
Ans: d) all