Block #2,610,055

2CC0b.e83029

Discovered 4/12/2018, 1:19:10 AM · Difficulty 11.2261 · 4,181,396 confirmations

Block Header

Block Hash

16487c46edc05336bcc9cbfb9ddd499b8a34cde395ef6555e6afc73b995462c4

View on Chainz ↗

Height

#2,610,055

Difficulty

11.226050

Transactions

Size

96.38 KB

Version

Bits

0b39de6f

Nonce

179,631,722

Timestamp

4/12/2018, 1:19:10 AM

Confirmations

4,181,396

Merkle Root

a0d11367187484761ae5e8cf9f93c54f2ac8372d78fa3e1bebbf6415ed329c70

Transactions (2)

Coinbase6da840649aa195…cbb983d16c888b

1 in → 1 out8.9200 XPM109 B

AWjEhtgg…Mk8pzQWR

41b7fa6bd60c13…ecf5d46105a423

665 in → 2 out800.0100 XPM96.19 KB

AQSMhQp7…uk2ycdmj ALPF8J52…Hjw4BMsG

Prime Chain Origin

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.

1.248 × 10⁹⁶(97-digit number)

12481971112160891022…28880342726730818560

How Primecoin's Proof-of-Work Constructs These Primes

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.

Prime Chain Origin = First Prime × Primorial (2·3·5·7·11·…)

Source: Primecoin prime.cpp — CheckPrimeProofOfWork()

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 2CC0b.e83029 formula:

Cross-reference on Chainz Explorer