Numbers /10,121
How rare is 10,121?
10,121 scores 533 and sits in the Extreme tier — 1 in 521 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 0.19% means that proportion of supported numbers scores at least this high. Every exact number has the same chance of being rolled. Same-length rank keeps the score and compares only numbers with 5 digits, including ties. 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.
This number's digits add up to an uncommon total.
Arithmetic · signal frequency
Contains a run of three or more consecutive ascending digits.
Sequence · signal frequency
This number uses an uncommon count of distinct digits.
Repetition · signal frequency
The product of exactly two primes.
Factorization · signal frequency
Digits strictly alternate between odd and even.
Sequence · signal frequency
A single digit appears exactly three times.
Repetition · signal frequency
Iterating the sum of squared digits reaches 1.
Arithmetic · signal frequency
Strongest signal: Digit sum 5. It appears in 252 supported numbers and contributes +239 after correlation decay.
Why is 10,121 unusual? Only 0.19% 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
10,121
Extreme · Top 0.19%
Position 4: 2 → 0 · +455 points.
Gained: Digit sum 3, ABAB pattern, Palindrome, Only two distinct digits, 2 distinct digits, Harshad number, Zigzag digits.
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 →Similar interesting numbers
Explore a shared pattern, a comparable score, or a mathematical relationship. Every link explains its connection to 10,121.
Shared patterns
Same length, nearby scores
Patterns in this number
Each of these has its own page explaining how common the pattern is and why.
Triple Digits
A triple contains exactly three copies of one digit, such as 8188 or 636306. It is the most common form of strong repetition — and the first one most people notice.
Ascending Digit Runs
A partial climb: somewhere in the number sit three or more digits each one higher than the last, as in the 456 inside 74560.
Alternating Odd and Even Digits
Odd, even, odd, even — or the reverse — all the way through, as in 385274 or 1614. The digits themselves are free; only their parity is constrained.
Happy Numbers
Square each digit, add them up, repeat. If you eventually reach 1 the number is happy; if not, you fall into a cycle. 19 → 82 → 68 → 100 → 1.
Semiprime Numbers
A semiprime is a product of exactly two primes, counted with multiplicity — 15 = 3 × 5, and 49 = 7 × 7 counts too.