Find Patterns in Numbers

Numbers love to repeat themselves: a list of IDs hides strings of twos, a set of coordinates hides descending runs, a column of counts hides near-mirrors. Spotting those regularities by eye is slow and unreliable - but a pattern detector sees them instantly, checking every value against every rule at once.

Find Patterns in Numbers takes any list - lines, commas, spaces - and analyses each value for repeated digits, all-same runs, ascending and descending order, mirror symmetry, even and odd status, digit sum, and more. Click a pattern to highlight its matches, combine several to intersect, copy the matched list or download a full report. Everything runs locally, in your browser.

• Instant analysis: Every number is scored against all pattern rules as you paste.
• Rich pattern set: Repeated digits, all-same, ascending, descending, palindromes, even/odd, digit sums and more.
• Click to filter: Each pattern button lights up the numbers that match it.
• Combine rules: Check several patterns to intersect them - palindromic evens, ascending odds and so on.
• Text-based exact: Large values, decimals and signs analyse correctly with no rounding.
• Copy matched or download report: Export the filtered list or the full per-number breakdown.
• Free and private: Everything runs locally; nothing is uploaded or stored.

1. Paste a list of numbers - one per line, or separated by commas or spaces.
2. Read the analysis - each number with its digit count and discovered patterns.
3. Click a pattern to highlight its matches, or combine several.
4. Copy the matched list or download the full report.

Example 1 - Find palindromes. Paste 123, 121, 456, 9009: the palindrome pattern reveals 121 and 9009 immediately.

Example 2 - All-same digits. Paste 111, 23, 2222, 45: the "all same" pattern keeps only 111 and 2222.

Example 3 - Ascending runs. Paste 123, 321, 456, 987: the ascending rule matches 123 and 456 (each digit climbs left to right).

Example 4 - Even with repeats. Paste 224, 135, 442, 777: combining "even" and "has repeated digit" keeps only 224 and 442.

Example 5 - Mixed data. Paste 3.14, -274, 0.707, 11: every value - decimals and negatives included - is analysed for the same pattern set.

• See structure fast: Pattern hunting that takes minutes by eye finishes in one click.
• Trustworthy results: Text-based checks mean huge and unusual numbers are analysed exactly.
• Flexible hunting: Combine any set of rules to isolate precisely what you are looking for.
• Both outputs: Copy the filtered list or download the full annotated report.
• Works on any list: Lines, commas or spaces - paste it and the tool figures it out.
• Private and free: All analysis stays in the browser; nothing is uploaded or logged.