Project Euler

Spec sheet

Purpose

The site aims to help people explore unfamiliar areas and learn new concepts in a fun, recreational context.Read 9 Oct 2026 · projecteuler.net

Audience

The problems are aimed at students, adults interested in mathematics, and professionals who want to keep their problem-solving and mathematics skills current.Read 9 Oct 2026 · projecteuler.net

Security

The site says connections use HTTPS and that passwords and account recovery keys are hashed using PHP’s one-way password hashing algorithm.Read 9 Oct 2026 · projecteuler.net

Support

Privacy or security concerns can be sent to [email protected]; other queries are directed to the alternative forum.Read 9 Oct 2026 · projecteuler.net

Account recovery

Because accounts have no verifiable personal information, the site cannot recover an account if its password is lost; members can generate an emergency recovery key.Read 9 Oct 2026 · projecteuler.net

Community groups

Groups let members create closed communities with ranked tables showing members’ progress and when they solved each problem.Read 9 Oct 2026 · projecteuler.net

Data collection

The privacy policy says accounts do not require or store real names, email addresses, or IP addresses; accounts use usernames and passwords.Read 9 Oct 2026 · projecteuler.net

Data sharing

Project Euler says it does not share database information with third parties.Read 9 Oct 2026 · projecteuler.net

Group visibility

Friends and group members can see a member’s progress page even when that member has hidden their public profile.Read 9 Oct 2026 · projecteuler.net

Problem archive

The archive lists problems 1 through 1003, and the recent page shows the ten most recently published problems.Read 9 Oct 2026 · projecteuler.net

Problem-solving policy

The site says solve times are automatically processed and profiles with unrealistic solve patterns may be flagged for review and marked untrusted.Read 9 Oct 2026 · projecteuler.net

Progress tracking

Tracking progress requires an account and cookies enabled; registration is free.Read 9 Oct 2026 · projecteuler.net

Release schedule

The site publishes upcoming problem release dates and times on its News page.Read 9 Oct 2026 · projecteuler.net

What it is

Project Euler is a series of challenging mathematical and computer programming problems, most of which require a computer and programming skills to solve.Read 9 Oct 2026 · projecteuler.net

Plans and prices

Every Project Euler plan and price →

Where Specifiction places it

• Coding Challenge Platforms#23 of 307.2
• Coding Learning Software#36 of 427.3