Nerdle #1550 Answer
Saturday, April 18, 2026
52−23=29
- Structure
- AB-CD=EF
- Type
- Double-Digit Subtraction
- Result
- 29
How the clues would have read
- Today's equation begins with a two-digit number in the 50s.
- This puzzle uses subtraction only.
- The result is a 2-digit odd number.
The numbers behind it
- Divisibility: 52 is divisible by 2, 4, 13, and 26, 23 is prime, and 29 is prime
- Digital roots: 52 → 5+2 = 7, 23 → 2+3 = 5, 29 → 2+9 = 11 → 2
- Prime factorization: 52 = 2²×13, 23 = 23, 29 = 29
Why the structure matters
This puzzle's shape is AB-CD=EF — a double-digit subtraction, where each letter stands for one digit. Recognising the shape before the arithmetic is what separates a three-guess solve from a six-guess struggle: once you know the equation is a double-digit subtraction, most of the search space is gone before you have spent a single guess.
The result, 29, is prime — so it cannot be reached by multiplying two smaller whole numbers, which rules out a whole family of candidate equations immediately.
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