John D. Cook 1/10/2026

Primecoin primality test

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This technical article details the specific primality tests used by the cryptocurrency Primecoin for its proof-of-work system. It explains how the network uses the Fermat test with base 2 and the Euler-Lagrange-Lifchitz test to verify probable primes in prime chains, contrasting them with deterministic tests and discussing the implications for mining and blockchain verification.

Primecoin primality test

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