One may be choked back

This time we are looking on the crossword clue for: One may be choked back.
it’s A 22 letters crossword puzzle definition. See the possibilities below.

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Possible Answers: SOB.

Last seen on: –LA Times Crossword 16 May 19, Thursday
The Washington Post Crossword – May 16 2019

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. Five cases remain unsolved as of April 2017. Work on the Sierpinski problem is now being done at PrimeGrid.

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.

SOB on Wikipedia