This **crossword clue** is for the definition: *___ story (sad-sounding tale).*

it’s A 29 letters **crossword puzzle definition**.

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## Possible Answers: **SOB**.

Last seen on: Universal Crossword – Sep 15 2021

### Random information on the term “SOB”:

Seventeen or Bust was a distributed computing project started in March 2002 to solve the last seventeen cases in the Sierpinski problem. The project solved eleven cases before a server loss in April 2016 forced it to cease operations. Work on the Sierpinski problem moved to PrimeGrid, which solved a twelfth case in October 2016. Five cases remain unsolved as of April 2021[update].

The goal of the project was to prove that 78557 is the smallest Sierpinski number, that is, the least odd k such that k·2n+1 is composite (i.e. not prime) for all n > 0.When the project began, there were only seventeen values of k < 78557 for which the corresponding sequence was not known to contain a prime.

For each of those seventeen values of k, the project searched for a prime number in the sequence

testing candidate values n using Proth’s theorem. If one was found, it proved that k was not a Sierpinski number. If the goal had been reached, the conjectured answer 78557 to the Sierpinski problem would be proven true.