Unsolved
Bitcoin puzzle #106
Bitcoin puzzle #106 is unsolved. It holds 10.60 BTC, and its private key is an unknown number between 2105 and 2106−1 — a keyspace of 4.05 × 1031 possible keys. You can search that range with the solver below; it runs in your browser and never sends anything to a server.
Solver — #106
IdleJump to a random point in the range, sweep a block of keys, jump again. Best when many people search the same puzzle.
Each thread is one Web Worker on one core. Leaving a core free keeps the page responsive.
Walk the range in order from your start key up to the end of the range, splitting that region evenly across threads. Keys below the start key are not searched. Best when you are coordinating a systematic sweep.
Range covered: 0%
· Current key: 200000000000000000000000000
Puzzle #106 at a glance
- Reward
- 10.6 BTC
- Address
- 18KsfuHuzQaBTNLASyj15hy4LuqPUo1FNB
- HASH160
- 505aaa63a5e209dfb90cee683a8e227a8c278e47
- Range start
- 200000000000000000000000000
- Range end
- 3ffffffffffffffffffffffffff
- Bit length
- 106-bit
- Keys in range
- 4.05 × 1031 (40564819207303340847894502572032)
- Transactions
- 3
The arithmetic
The range for puzzle #106 contains 4.05 × 1031 private keys. A modern eight-core laptop running this solver checks on the order of four million keys per second, so an exhaustive sweep would take about 3.21 × 1017 years. Searching randomly instead of in order does not change that expectation — it only changes which unlucky order you fail in.
Puzzle #106 — common questions
How many private keys does Bitcoin puzzle #106 contain?
Puzzle #106 spans the range 2^105 to 2^106−1, which is exactly 4.05 × 10^31 private keys — twice as many as puzzle #105.
How long would it take to solve Bitcoin puzzle #106?
An eight-core machine running this browser solver at four million keys per second would need about 3.21 × 10^17 years to sweep the whole range. A pooled GPU cluster reaching one trillion keys per second would need about 1.29e+3 billion years.
How much is Bitcoin puzzle #106 worth?
The address holds 10.6 BTC, roughly $829,503 at a reference price of $78,255 per BTC.
Is Bitcoin puzzle #106 solved?
No. #106 is one of the 78 unsolved puzzles. Its public key has never been exposed, so square-root methods like Pollard's Kangaroo do not apply — brute force over the range is the only option.
What is the key range for puzzle #106?
From 200000000000000000000000000 to 3ffffffffffffffffffffffffff in hexadecimal. The address is 18KsfuHuzQaBTNLASyj15hy4LuqPUo1FNB and its HASH160 is 505aaa63a5e209dfb90cee683a8e227a8c278e47.