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On the recordRead 9 Oct 202614 facts
Project Euler
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Free
Free
Free registration · account required to track progress
Read 9 Oct 2026 · projecteuler.net
On the record
- 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.projecteuler.net · read 9 Oct 2026
- Audience
- The problems are aimed at students, adults interested in mathematics, and professionals who want to keep their problem-solving and mathematics skills current.projecteuler.net · read 9 Oct 2026
- Community groups
- Groups let members create closed communities with ranked tables showing members’ progress and when they solved each problem.projecteuler.net · read 9 Oct 2026
- Data collection
- The privacy policy says accounts do not require or store real names, email addresses, or IP addresses; accounts use usernames and passwords.projecteuler.net · read 9 Oct 2026
- Data sharing
- Project Euler says it does not share database information with third parties.projecteuler.net · read 9 Oct 2026
- Group visibility
- Friends and group members can see a member’s progress page even when that member has hidden their public profile.projecteuler.net · read 9 Oct 2026
- Problem archive
- The archive lists problems 1 through 1003, and the recent page shows the ten most recently published problems.projecteuler.net · read 9 Oct 2026
- 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.projecteuler.net · read 9 Oct 2026
- Progress tracking
- Tracking progress requires an account and cookies enabled; registration is free.projecteuler.net · read 9 Oct 2026
- Purpose
- The site aims to help people explore unfamiliar areas and learn new concepts in a fun, recreational context.projecteuler.net · read 9 Oct 2026
- Release schedule
- The site publishes upcoming problem release dates and times on its News page.projecteuler.net · read 9 Oct 2026
- Security
- The site says connections use HTTPS and that passwords and account recovery keys are hashed using PHP’s one-way password hashing algorithm.projecteuler.net · read 9 Oct 2026
- Support
- Privacy or security concerns can be sent to [email protected]; other queries are directed to the alternative forum.projecteuler.net · read 9 Oct 2026
- 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.projecteuler.net · read 9 Oct 2026
