Owlet puzzle #53
Released Thursday, August 27, 2026 UTC
407
the answer for puzzle #53
The five clues
- A three-digit odd number greater than four hundred.
- A three-digit number of the form 11·p where p is a prime greater than thirty.
- The largest three-digit narcissistic number: equal to the sum of the cubes of its digits.
- One of only four three-digit narcissistic numbers, alongside 153, 370, and 371.
- Its factorization is 11 · 37.
Backstory
407 = 4³+0³+7³ is one of only four three-digit narcissistic numbers: 153, 370, 371, and 407. Its factorization 11 · 37 makes it composite, yet still fixed under the digit-cube map. Narcissistic numbers in base 10 are finite in count.
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