Numeric Core Calculator

Calculate the numeric core of any number using Blue Prince rules. Enter any number to get started.

Esc to clear input,Ctrl+/ to focus input

Input Mode

Automatic SplitManual Split

Enter any number. For numbers with 3 digits or less, the number itself is the numeric core. Non-digit characters will be automatically removed.

How It Works

The Blue Prince numeric core algorithm follows these steps:

  1. Automatic Mode: Take any number with 4 or more digits and split it into 4 smaller numbers
  2. Manual Mode: Or manually specify 4 numbers to start with
  3. Assign operations (+, -, ×, ÷) to create the smallest positive whole number
  4. First number always uses addition (+)
  5. Each operation (-, ×, ÷) must be used exactly once
  6. If result has 4+ digits, repeat the process with automatic splitting

Examples:

Automatic Mode:

86455: Auto-split → 8, 6, 45, 5 → +8 -6 ×45 ÷5 = 18

3614: Auto-split → 3, 6, 1, 4 → +3 ×6 ÷1 -4 = 14

Manual Mode:

Manual Split [8, 6, 45, 5]: → +8 -6 ×45 ÷5 = 18

Manual Split [86, 4, 5, 5]: → +86 -4 ×5 ÷5 = 82

Manual Split [1, 2, 3, 4]: → (no way to get a positive integer, try other combinations)