Is 860 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 860 is composite or not first we have to find its factors.
Contents
Factors of 860:
- If we have taken numbers from 1, 2, 3…for checking factors of 860, we found that 860 has factors 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860. Hence, we must say that 860 is a composite number.
- Thus, 860 is the composite umber.
- If we multiply 860 by 1, 2, 3 then we get the multiples of 860 which are 860, 1720 and so on.
About the number 860:
- 860 has more than two factors which are 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860 and hence it is the composite number.
- 860 is the even composite number and it is not the perfect square also.
- If we divide 860 by 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860 then we get remainder as zero. Hence, 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860 are the factors of 860.
Note:
- 860 is not the perfect square.
- Factors of 860: 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860
- Prime factors of 860: 2, 5, 43
Conclusion:
- 860 is the composite number which has factors 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860
- And hence, 860 is not the prime number.
Multiple Choice Questions:
1) 860 is a
a) Odd number
b) Prime number
c) Composite number
d) Both b and c
Ans: c) composite number
2) The prime factors of a composite number 860 are
a) 1
b) 2, 5, 43
c) 1, 4, 10, 20, 86, 172, 215, 430 and 860
d) 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860
Ans: b) 2, 5, 43
3) 860 is the composite number because
a) It has factors 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860
b) It has only prime factors
c) Divisible by 2
d) Both a and b
Ans: a) It has factors 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860