Question

Explain why 3×7×13×19+26 is a composite number.

Answer 1

21×247+26
5187+26
5213

it has more than one factor.thus it is a composite number.

Answer 2

Answer:

The number 3×7×13×19+26 is a composite number because it is divisible by 13.

Step-by-step explanation:

The given number is

3×7×13×19+26

A number is called a composite number, if it has at least one divisor other than 1 and itself.

The factors of 26 are 2 and 13.

The given number can be written as

$3\times 7\times 13\times 19+2\times 13$

$13(3\times 7\times 19+2)$

It means the given number is completely divided by 13.

Since the given number is divisible by 13, therefore it is a composite number.