Question

List all the prime,numbers of 17,18,19,20,21,22,23,24

Answer 1

Answer:

The prime numbers are 17, 19 and 23.

Step-by-step explanation:

Prime numbers are numbers that have only 2 factors, 1 and itself.

$17 = 1 \times 17 \\ 17 = 2 \: factors (prime)$

$18 = 1 \times 18 \\ 18 = 2 \times 9 \\ 18 = 3 \times 6 \\ 18 = 6 \: factors$

$19 = 1 \times 19 \\ 19 = 2 \: factors(prime)$

$20 = 1 \times 20 \\ 20 = 2 \times 10 \\ 20 = 4 \times 5 \\ 20 = 6 \: factors$

$21 = 1 \times 21 \\ 21 = 3 \times 7 \\ 21 = 4 \: factors$

$22 = 1 \times 22 \\ 22 = 2 \times 11 \\ 22 = 4 \: factors$

$23 = 1 \times 23 \\ 23 = 2 \: factors(prime)$

$24 = 1 \times 24 \\ 24 = 2 \times 12 \\ 24 = 3 \times 8 \\ 24 = 4 \times 6 \\ 24 = 8 \: factors$

Answer 2

Answer:

17, 19, 23

Step-by-step explanation:

17,18,19,20,21,22,23,24

• A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers.

Prime numbers in the list satisfying the above definition are: 17, 19, 23

All the rest are composite numbers