Sandbox scoreEPIC
9,298EP
Top 7.2599% ยท sandbox population rank
72,594 higher ยท 5 tied ยท 927,401 lower
The patterns
Matched badges / 3
Bookends
First 2 digits mirror the last 2 digits, excluding full palindromes (e.g. 421324)
+1,800 EPTwo Pair
Two distinct pairs of identical digits
+600 EPPrime Enigma
The numeric value is prime; leading zeros are allowed
+3,800 EPScores use independent sandbox rules at ร1. 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.