Question

what is prime number​

Answer 1

A prime number is a natural number greater than 1 that can't be formed by multiplying two smaller natural number .

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Answer 2

$\textbf{\large{\underline{Answer}}}$

A Prime Number is a number which has only 2 factors :

$\tt{\large{\rightarrow 1 }}$

$\tt{\large{\rightarrow The \: number \: itself }}$

• 2 is the smallest even prime number.

$\textsf{\large{Example :}}$

7 can be divided by only 1 and 7 so its a Prime Number.

Similarly 5,11,19 are also Prime Numbers

$\textsf{\large{What is a factor ??}}$

• When two numbers are multipled, each of the number is a factor of the product.

$\textsf{\large{Factors of 15 and 35}}$

$\textsf{\large{\underline{ Factors of 15}}}$

5 × 3 = 15

$\textsf{\large{5 and 3 are Factors of 15}}$

$\textsf{\large{\underline{Factors of 35}}}$

7×5 = 35

$\textsf{\large{7 and 5 are Factors of 35}}$

The factor of a number also divides the number completely leaving no remainder.

$\tt{\large{\rightarrow 35 ÷ 5 =7 }}$

$\tt{\large{\rightarrow Remainder = 0 }}$

$\tt{\large{\rightarrow 35 ÷ 7 =5}}$

$\tt{\large{\rightarrow Remainder = 0 }}$

$\tt{\large{\rightarrow 35 ÷ 1 = 35}}$

$\tt{\large{\rightarrow Remainder = 0 }}$

$\tt{\large{\rightarrow 35 ÷ 35 =1}}$

$\tt{\large{\rightarrow Remainder = 0 }}$

We can see that 35 completely Divide by 1,5,7 and 35