3 ms·

Good point.. I tried "potter" and I got Not eligible. So either I'm a great last digit guesser (Though I'm usually not lucky in things like gambling....) I'll

• ocdtrekkie 7y ago
  It may not be so much a great guess as a statistical likelihood! In 2000, there were over 2.3 million Smiths in the United States: https://blogs.ancestry.com/cm/smith-a-short-history-of-americas-most-popular-surname/ https://blogs.ancestry.com/cm/smith-a-short-history-of-ameri... (This number has likely grown roughly alongside our population, so let's use 2000 numbers for this.) In 2000, we had 281 million people in the US, which means 0.8% of Americans have the last name Smith. If we assume every possible SSN could be handed out, a trailing six digit entry could have anywhere up to 999 possible SSNs, so you're firing out a shotgun with a pretty big number of potential targets each time you guess an SSN.