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AM25 081 abstractium-359
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by
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altermaven
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ALTERMAVEN                        2025-07-08 20:04
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"FLASHBACK"  
  
359 IS A RATHER INTERESTING PRIME NUMBER. IT IS A SOPHIE GERMAIN PRIME, AS WELL AS A EMIRP: BECAUSE THE REVERSE OF 359 (953) IS ALSO PRIME.  
  
A NUMBER IS A SOPHIE GERMAIN PRIME WHEN 2(N)+1 ENDS UP AS A PRIME NUMBER. IN WHICH CASE THE RESULT IS 719, WHICH INITSELF IS A SOPHIE GERMAIN PRIME.  
  
BUT 359 IS ALSO A SAFE PRIME. A SAFE PRIME IS A 'REVERSE' SOPHIE GERMAIN PRIME: WHERE (N-1)/2 EQUALS A PRIME NUMBER. IN WHICH CASE, THAT NUMBER IS 179.