Owlet puzzle #39
Released Thursday, August 13, 2026 UTC
373
the answer for puzzle #39
The five clues
- A three-digit palindromic prime.
- A palindromic prime between three hundred fifty and four hundred.
- The thirteenth palindromic prime in order.
- A palindromic prime made of single-digit primes, and the 74th prime overall.
- Digits are all the same odd prime, sandwiched around another prime.
Backstory
373 is a palindromic prime. Its immediate neighbors 371 = 7·53 and 375 = 3·5³ are both composite. Three-digit palindromic primes are exactly 15 in count: 101, 131, 151, 181, 191, 313, 353, 373, 383, 727, 757, 787, 797, 919, 929.
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