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Comment on What happens when the US runs out of SSNs?

remotelove@lemmy.ca ⁨5⁩ ⁨weeks⁩ ago

There are several more that aren’t used. There are a few reserved for promotions or movies and such. 666, 900-999 and 000 numbers are out as well.

I believe that SSNs have to pass a luhn check too.

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Blackmist@feddit.uk ⁨5⁩ ⁨weeks⁩ ago
But that would mean there’s already duplicates in use as you’d be limited to 90 million rather than 900 million.

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- remotelove@lemmy.ca ⁨5⁩ ⁨weeks⁩ ago
  en.m.wikipedia.org/wiki/Social_Security_number#Va…
  
  www.investopedia.com/terms/l/luhn-algorithm.asp#:….
  
  More info there.
  
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  - Blackmist@feddit.uk ⁨5⁩ ⁨weeks⁩ ago
    From the first link.
    
    Unlike many similar numbers, Social Security numbers have no check digit.
    
    From the second.
    
    The Luhn algorithm is used to check or validate identification numbers to ensure their accuracy. Today, the algorithm verifies that a credit card or Social Security number was input and processed accurately.
    
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    remotelove@lemmy.ca ⁨5⁩ ⁨weeks⁩ ago
    Yeah, personally, I have questions about the luhn check myself. (I am not in a state to research more this evening, unfortunately.)
    
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