Block #3,437,201
1CC0a.ffa895Discovered 11/17/2019, 6:52:15 PM · Difficulty 10.9789 · 3,359,612 confirmations
Height
#3,437,201
Difficulty
10.978896
Transactions
17
Size
3.47 KB
Version
2
Bits
0afa98ed
Nonce
2,057,590,780
Timestamp
11/17/2019, 6:52:15 PM
Confirmations
3,359,612
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.ffa895 formula: