Block 78 palindrome
A block 78 sat whose number reads the same backwards, such as 390,000,000,093: 5,000 of block 78's 5,000,000,000 sats.
How a sat qualifies
The row's definition is Block 78 and palindrome: a sat between 390,000,000,000 and 394,999,999,999 whose decimal digits read the same in both directions.
Every number in that range has 12 digits, so a palindrome is fixed by its first six: 3, 9, then 0 to 4, then any three digits, the last six mirroring them. That gives 5 × 10 × 10 × 10 = 5,000 Block 78 palindromes, one in a million of its sats, from 390,000,000,093 to 394,999,999,493. Some are also 3D palindromes: 390,000,000,093 uses exactly the digits 0, 3 and 9.
Why collectors care
Block 78 is the block mined by Hal Finney, in the site's description, and it is not tracked whole; its palindromes are one of the three ways its sats are collected, with its alphas and omegas.
How many
- Will ever exist: 5,000, all mined.
- Extracted, each held alone in a small output: 1,666.
- Addresses holding one: 854.
Supply and market
| Category | Will exist | Mined | Extracted | Last sale | Floor |
|---|---|---|---|---|---|
| Block 78 palindrome | 5,000 | 5,000 | 1,666 | 269,454 sats | 350,000 sats |
As of block 972,427. Prices are per sat.