How rare is 21?
21
Remarkable · Top 0.13%
- Total score
- 200 points
- Rank
- 1,208 of 1,000,000
- Top
- 0.13%
- Beats
- 99.87% of numbers
- Ties
- Tied with 2 others
Every number has the same 1-in-1,000,000 chance of being rolled. This number beats 99.87% of all numbers; 2 other numbers score exactly the same.
1 away from a Solid Block: 22
21 = 3 × 7
Why 21 scores this way
21 is both a Fibonacci number and the sixth triangular number. Golden Spiral counts for 151 points, and 21 = 3 × 7 adds Two Factors. At 200 points it sits just outside the Legendary tier, at rank 1,208.
Badges 21 earns
5 badges found. Only the highest-scoring badge in each family counts; the others are shown for completeness.
| Badge | Family | What it means | Odds | Points | Score |
|---|---|---|---|---|---|
| No Repeats | Digits | Two or more digits and no digit appears twice, like 795,014 | about 1 in 6 | 26 | Counts |
| Two Factors | Primes | Made by multiplying exactly two primes, like 15 (3 × 5) or 49 (7 × 7) | about 1 in 5 | 23 | Counts |
| Golden Spiral | Shapes | In the Fibonacci sequence, where each number adds the two before it (1, 2, 3, 5, 8, 13…), like 6,765 | 1 in 34,483 | 151 | Counts |
| Triangle Stack | Shapes | That many dots make a neat triangle (1, 3, 6, 10, 15…), like 55 | 1 in 708 | 95 | Shown only |
| Digit Divider | Shapes | Divides evenly by the sum of its digits, like 81 (8 + 1 = 9, and 81 ÷ 9 = 9) | 1 in 10 | 34 | Shown only |
| Total score | 3 counting badges | 200 | |||