Block #4,064,005
1CC0a.dbd5b2Discovered 2/3/2021, 3:45:06 PM · Difficulty 10.8042 · 2,753,623 confirmations
Height
#4,064,005
Difficulty
10.804191
Transactions
4
Size
1.37 KB
Version
2
Bits
0acddf74
Nonce
1,354,099,098
Timestamp
2/3/2021, 3:45:06 PM
Confirmations
2,753,623
Mined by
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 1CC0a.dbd5b2 formula: