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Clarification Request  Go to the Prime Factory challenge

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Clarification Request
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What does digit sum exactly means?

1- Sum the digits on both numbers and check the result is prime?
2- Sum the digits in each number and check both results are prime?
3- Sum corresponding digits and check all results are prime?
4- Anything else?
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2)
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oh dear.

I have just gone to quite a high number of primes doing the sum of the 2 numbers.

Time to recode it...
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Hi,

You say that the right answer is number 2. Then why 1000099 and 1000121 aren't ok ? I mean they are the first two to be prime number with sums which are primes too : 1+9+9 = 19 (prime) and 1+1+2+1 = 5 (prime)

Thx, Romain
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Simply because they are not the first two primes to fulfil the constraints.
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RE: Clarification Request
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This challenge was broken for several weeks, because the solution has been reset to NULL.

If you tried this chall within the last weeks, i am very sorry for any inconvinience.

The reason for this is EditChallenge reset the password to NULL and i hope i did not edit too much challenges, with a static solution.

I will check all static solutions now to be still ok Smile

Edit: Checked all solutions and all other challenges were ok.
The geeks shall inherit the properties and methods of object earth.
Last edited by gizmore - Oct 04, 2010 - 16:54:49
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Quote from Gizmore
Oct 04, 2010 - 16:37:35

This challenge was broken for several weeks, because the solution has been reset to NULL.

If you tried this chall within the last weeks, i am very sorry for any inconvinience.

The reason for this is EditChallenge reset the password to NULL and i hope i did not edit too much challenges, with a static solution.

I will check all static solutions now to be still ok Smile

Edit: Checked all solutions and all other challenges were ok.
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RE: Clarification Request
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The password this challenge is 10000331000037 ?, thanks

use the Criba de Eratóstenes, is result :
1000003
1000033
1000037
1000039
1000081
1000099
1000117
1000121
1000133
1000151
1000159
1000171
1000183
1000187
1000193
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