How rare is your number?

Enter any whole number from 0 to 999,999. Commas and spaces are fine; leading zeros are dropped. Try a birthday as MMDDYY, such as 122590.

What the calculator shows

Each number gets its full list of badges with their rules and points, the one badge per family that counts, its total score, its exact rank among all 1,000,000 numbers, how many numbers share its score, and its tier. If a palindrome, a same-digit number, a run of four or a round thousand is close by, it shows that near-miss too.

Try 777, 2,048, 123,321, 314,159, 500,000.

Famous numbers to try

42 — the answer to everything
777,777 — six lucky sevens
123,456 — the counting run
9,001 — over nine thousand
0 — the number zero
1 — the first counting number
3 — prime and Fibonacci
6 — the smallest perfect number
10 — a triangular number
12 — a dozen
21 — Fibonacci and triangular
23 — a prime with prime digits
28 — the second perfect number
37 — the hidden factor of 111
64 — squares on a chessboard
73 — the mirror prime
99 — a Kaprekar number
101 — a palindromic prime
128 — original ASCII characters
256 — values in one byte
360 — degrees in a circle
365 — days in a year
404 — page not found
495 — three-digit Kaprekar constant
512 — two to the ninth
1,024 — bytes in a kibibyte
1,089 — the 1,089 number trick
1,440 — minutes in a day
1,729 — the taxicab number
1,776 — US independence year
1,969 — the first Moon landing
1,984 — Orwell’s novel
2,000 — the millennium year
2,026 — Rarebit’s launch year
3,600 — seconds in an hour
4,096 — two to the twelfth
6,174 — Kaprekar’s constant
8,128 — the fourth perfect number
10,000 — ten thousand
12,345 — the climbing run
54,321 — the countdown run
65,536 — values in 16 bits
86,400 — seconds in a day
111,111 — six 1s, 11/11/11
141,421 — square root of 2
161,803 — the golden ratio
271,828 — Euler’s number e
299,792 — the speed of light
500,000 — half a million
525,600 — minutes in a year