Anagram Duplicate Finder
Group every number by its digits to find the ones that are rearrangements of each other - by digit composition, by reversal, or by exact match.
Match by:
Leading zeros:
Output:
Sort by:
Separator:
Statistics Result
Download CSV
| No. | Original | Digit signature | Same group | Status |
|---|
Introduction to the tool and how to use it
Some numbers look different but break apart into exactly the same digits, such as 123 and 321 or 2041 and 4120 — they are rearrangements of each other (also called reversed duplicates or anagrams). When checking numbers for duplicates, deduplicating verification codes, or screening lottery entries, these hidden repeats are the hardest to spot by eye; this tool groups them at once using a signature.
Three match modes:
· Same digit composition (any order) — sort the digits ascending into a signature; for example 2041, 4120, and 1024 all share the signature 0124 and are rearrangement duplicates;
· Reversed order — take the smaller of the original string and its reverse as the signature, grouping only pairs that read the same forwards and backwards, such as 123 with 321 and 45 with 54;
· Exact match — repeats count only when the literal strings are identical, equivalent to ordinary duplicate checking.
You can also choose whether to ignore leading zeros: when on, 012 and 12 are treated as the same value.
Note: the same-group column lists the other numbers that rearrange into the current one, for easy direct checking; the same value appearing multiple times still belongs to one group.
Three match modes:
· Same digit composition (any order) — sort the digits ascending into a signature; for example 2041, 4120, and 1024 all share the signature 0124 and are rearrangement duplicates;
· Reversed order — take the smaller of the original string and its reverse as the signature, grouping only pairs that read the same forwards and backwards, such as 123 with 321 and 45 with 54;
· Exact match — repeats count only when the literal strings are identical, equivalent to ordinary duplicate checking.
You can also choose whether to ignore leading zeros: when on, 012 and 12 are treated as the same value.
Note: the same-group column lists the other numbers that rearrange into the current one, for easy direct checking; the same value appearing multiple times still belongs to one group.
How to use
- Paste numbers into the left input box; commas, spaces, line breaks, or any symbol may separate them (only integers are recognized).
- Choose the match mode.
- Choose how to handle leading zeros.
- Choose output: list all / duplicates only / unique only.
- Choose the sort order (input order / numeric value / group).
- Click start; filtered results print one per line on the right, and the table below shows each number's digit composition, same-group numbers, and status (duplicate / unique).
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