# Is 428 is a Composite number

## Is 428 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 428 is composite or not first we have to find its factors.

### Factors of 428:

• If we have taken numbers from 1, 2, 3…for checking factors of 428, we found that 428 has factors 1, 2, 4, 107, 214 and 428. Hence, we must say that 428 is a composite number.
• Thus, 428 is the composite umber.
• If we multiply 428 by 1, 2, 3 then we get the multiples of 428 which are 428, 856 and so on.

• 428 has more than two factors which are 1, 2, 4, 107, 214 and 428 and hence it is the composite number.
• 428 is the even composite number and it is not the perfect square also.
• If we divide 428 by 1, 2, 4, 107, 214 and 428 then we get remainder as zero. Hence, 1, 2, 4, 107, 214 and 428 are the factors of 428.

### Note:

• 428 is not the perfect square.
• Factors of 428: 1, 2, 4, 107, 214 and 428
• Prime factors of 428: 2, 107

### Conclusion:

• 428 is the composite number which has factors 1, 2, 4, 107, 214
• And hence, 428 is not the prime number.

#### Multiple Choice Questions:

1) 428 is a

a) Prime number

b) Even number

c) Composite number

d) Both b and c

Ans: d) both b and c

2) The prime factors of a composite number 428 are

a) 2

b) 2, 107

c) 1, 4, 214 and 428

d) 1, 2, 4, 107, 214 and 428

Ans: b) 2, 107

3) 428 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

Updated: December 6, 2021 — 12:29 pm