For loops to test an prime number

[a-pedro]

Please, I need some help to solve this problem!

Challenge is:

What should be the expressions in the instruction below to test whether a given number is prime (divisible only by 1 and itself) or not?

In the code image, you can see the space where I can make changes to better understand the challenge. I can only make changes in the [initialization]; [condition] as you see in the example on the attached image.

beneath you can see my tried code

let n = 17; // the commands below can work for any values of n

let prime = true;
for(let i = 1; i > n; i--) 
   if(n%i == 0) // Tests whether n is divisible by i
     prime = false;
console.log(`${n} ${!prime?"no ":""} is a prime number.`);

[JeremyLT]

@a-pedro

for(let i = 1; i > n; i--)

Why start with 1?

Note - its best to use {} with your loops and if statements

[a-pedro]

hi ! so I have tried many ways but none of them print to me the correct answer.
So the first try was for ( let i = 0 ; i > n ; i–) and it did not work.
That was my last try.

however the answer has to print prime and non-prime numbers when I change the variable N

[JeremyLT]

@JeremyLT

Why start with 1?

Can you answer this question please?

[a-pedro]

I’m very sorry Jeremy, there is a missing digit I intended to write 19. Because I thought as the condition in the expression is i > ; to create a variable i as value of 19 could run the code to tell me if the variable N=17 is a prime number or not !

I’m a very beginner learner. I am sorry about printing the screen of the challenge with that mistake

[a-pedro]

thanks very much for your tried to help.
Discussing that problem with my wife she got the way to figure it out.
for (let i = n - 1; i > 1; i–)