1,111,111,111,111,111,111/Historical Note

Historical Note on $1 \, 111 \, 111 \, 111 \, 111 \, 111 \, 111$

The prime nature of $1 \, 111 \, 111 \, 111 \, 111 \, 111 \, 111$ was discovered by a reader of one of Henry Ernest Dudeney's newspaper puzzle columns in $1918$.


Sources

  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $1,111,111,111,111,111,111$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $1,111,111,111,111,111,111$
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