Count Primes
Choose an exact lower and upper bound; the private Lab preserves large integer endpoints without browser-number rounding.
GOLD1 · PRIME COUNTING
Count primes.
Keep the interval exact.
Gold1 is the prime-counting engine in the Chromatic family, with a dedicated Count Primes workflow and a separate benchmark path.
Research enginePrivate numerical core
PUBLIC SCOPE
What this engine is for.
A concise public surface around a private numerical implementation.
Primary surfaceCount primes over an explicit integer interval
Benchmark referenceprimecount comparison path in the private Lab
Colour identityGold
CAPABILITY MAP
Current public capabilities.
Capabilities are described without shipping implementation details into the browser.
Benchmark
Compare Gold1 against an appropriate primecount reference under recorded conditions.
Setup
Build, doctor and validation maintenance are grouped behind setup rather than cluttering the primary public action.
Claim boundary
A correct count under a recorded interval is evidence. A timing result is not meaningful unless both implementations agree on the exact workload and result.