Block #4,106,065
2CC0a.d36173Discovered 3/4/2021, 5:19:08 PM · Difficulty 10.8133 · 2,686,404 confirmations
Height
#4,106,065
Difficulty
10.813265
Transactions
2
Size
89.30 KB
Version
2
Bits
0ad03225
Nonce
597,522,262
Timestamp
3/4/2021, 5:19:08 PM
Confirmations
2,686,404
Merkle Root
This is the prime chain origin stored in the block header. It is a composite number (not prime itself) — it equals the first prime in the chain multiplied by a primorial. The origin anchors the entire chain to this specific block.
Primecoin stores a value called the prime chain origin in each block. The miner found a large integer such that when divided by a primorial (the product of small primes: 2 × 3 × 5 × 7 × …), the result is the first prime in the chain. The origin is deliberately divisible by this primorial — that divisibility is part of the proof.
This is why the origin has many small prime factors — those factors are the primorial divisor. The chain then extends from the first prime using the 2CC0a.d36173 formula: