Block #4,777,479
2CC0a.ed2583Discovered 6/13/2022, 7:41:05 PM · Difficulty 10.8455 · 2,030,824 confirmations
Height
#4,777,479
Difficulty
10.845511
Transactions
5
Size
3.02 KB
Version
2
Bits
0ad87363
Nonce
355,243,832
Timestamp
6/13/2022, 7:41:05 PM
Confirmations
2,030,824
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 2CC0a.ed2583 formula: