[ASSIGNMENT] Palandöken Number

Question

Palandöken Number that even if you delete any digit of number, number still prime.

For example:
719 is a Palandöken number. If we delete 1, 79 still prime. Or delete 7, 19 still prime..

So, what is the sum of Palandöken Number till 100.000?

(Palandöken is a name of mountain in Turkey.)

Answer 1

unsure whether numbers below 10 are consedered as Palandöken numbers since they are one digit numbers.....

https://code.sololearn.com/cMoDRpp3n0t6/?ref=app

Answer 2

Solution marked as best is wrong - 31 should not be added because 1 is not prime. Moreover the prime test is very slow in the proposed solution.

My one liner solution https://code.sololearn.com/cBIeiPDan69D/?ref=app

Answer 3

Time to validate challenge is too long. If you limit challenges in QA sololearn will lose any interest for more advanced users who only look for challenges. Kaimi Ace

Answer 4

Here is my solution on Python with comments for better understanding:

https://code.sololearn.com/cXj8kKaFBIkA/?ref=app

It calculates sum of all Palandoken numbers in a range from 1 to some given limit. It also prints a list of all such numbers. So type 100000 to see the answer for the question in this challenge. I consider single digit primes to be not Palandoken numbers, so my answer is 831711.

Answer 5

@Burey As @VcC have already mentioned: 1 is not Prime number, so your solution is wrong. I see that you also consider single digit Primes as Palandoken numbers. I think that they are not, but to be sure we need some clarifications from @Ali B. - author of the challenge.

Answer 6

@Ali B. First of all, I would like to ask you if single digit Primes should be considered as Palandoken numbers or not?
Secondly, just a friendly advise, solve the challenge by your own before publishing it, or at least check solutions of participants on the correctness before mark them as "best answer". Otherwise, it brings a lot of misunderstandings for the others. For a moment, we can conclude that you also consider number 31 as Palandoken number for some reasons. Is that the case? If so, can you explain your logic, please?

Answer 7

Guitar subset

https://code.sololearn.com/cIWM431e2L91/?ref=app