Owlet puzzle #40
Released Friday, August 14, 2026 UTC
191
the answer for puzzle #40
The five clues
- A three-digit palindrome.
- A palindromic prime.
- The 43rd prime, and a palindromic prime whose digits are all odd.
- The next prime after it is 193 — the two form a prime pair.
- A palindromic prime whose predecessor 181 is also a palindromic prime.
Backstory
191 is a palindromic prime and forms a twin prime with 193. It's also a Sophie Germain prime (2·191 + 1 = 383 is prime) and belongs to the sequence of primes whose digit reversal equals themselves — the smallest three-digit palindromic prime is 101.
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