Sandbox scoreLEGENDARY
23,610EP
Top 1.4279% · sandbox population rank
14,277 higher · 2 tied · 985,721 lower
The patterns
Matched badges / 4
Bookends
First 2 digits mirror the last 2 digits, excluding full palindromes (e.g. 421324)
+1,800 EPTriple Threat
The largest repeated digit group has exactly 3 digits (e.g. 777124)
+1,200 EPFull House
Three of one digit and three of another (or 3 and 2)
+14,000 EPPrime Enigma
The numeric value is prime; leading zeros are allowed
+3,800 EPScores use independent sandbox rules at ×1. Top / Bottom percentages include tied scores across all 1,000,000 inputs; they are not official or lock-conditioned odds.
The possibilities
Best single-digit edits
All 54 changes checked. Follow a number to compare.
Keep exploring
Full archiveMathematical landmarks, familiar patterns, and surprising combinations.