Block #2,580,834
1CC0b.2a1d98Discovered 3/23/2018, 10:55:20 AM · Difficulty 11.0549 · 4,260,319 confirmations
Height
#2,580,834
Difficulty
11.054926
Transactions
4
Size
1.09 KB
Version
2
Bits
0b0e0f9c
Nonce
675,525,616
Timestamp
3/23/2018, 10:55:20 AM
Confirmations
4,260,319
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 1CC0b.2a1d98 formula: