Block #3,244,535
TWN0b.69c2ddDiscovered 6/28/2019, 10:30:08 AM · Difficulty 11.0076 · 3,555,048 confirmations
Height
#3,244,535
Difficulty
11.007559
Transactions
7
Size
4.62 KB
Version
2
Bits
0b01ef66
Nonce
961,059,654
Timestamp
6/28/2019, 10:30:08 AM
Confirmations
3,555,048
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 TWN0b.69c2dd formula: