Numbers /12,821
How rare is 12,821?
12,821 scores 472 and sits in the Extreme tier — 1 in 265 of all supported numbers score this high or higher. Everything below is computed from a complete analysis of all 1,000,001 numbers in range.
RNGdle.net’s own rarity score. Top 0.38% means that proportion of supported numbers scores at least this high. Every exact number has the same chance of being rolled. How this differs from EP · Badge guide
These notes make the number easy to read, but they add no score unless a separately counted rarity signal appears below.
Reads the same forwards and backwards.
Symmetry · signal frequency
This number's digits add up to an uncommon total.
Arithmetic · signal frequency
Divisible only by 1 and itself.
Factorization · signal frequency
This number uses an uncommon count of distinct digits.
Repetition · signal frequency
Two different digits each appear twice.
Repetition · signal frequency
Strongest signal: Palindrome. It appears in 1,989 supported numbers and contributes +179 after correlation decay.
Why is 12,821 unusual? Only 0.38% of the 1,000,001 supported numbers receive an equal or higher rarity score. This number falls in the Extreme tier. Scoring is grounded in the exact frequency of each detected trait — rarer traits carry more information and contribute more to the score.
Algorithm version 1.1.0
One digit away
One change could reach Singular.
Your number
12,821
Extreme · Top 0.38%
Position 3: 8 → 1 · +416 points.
Gained: ABAB pattern, Digit sum 7, Only two distinct digits, 2 distinct digits, Alternating parity, Zigzag digits, Triple digit.
44 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.
Explore & share this near miss →Patterns in this number
Each of these has its own page explaining how common the pattern is and why.
Double Pair Numbers
A double pair has two different digits appearing twice each, like 3388 or 271721. It is the digit equivalent of two pair in poker.
Palindrome Numbers
A palindrome reads the same forwards and backwards, like 12321 or 909. They are one of the most recognizable patterns a number can have.
Prime Numbers
A prime has no divisors other than 1 and itself. They are the building blocks every other number is assembled from.