About the Project

613.fyi is an independent, non-commercial knowledge project. The goal of this website is to make the religious, historical, symbolic, and mathematical meaning of the number 613 accessible and understandable.

Our Principles

• Source-oriented: We do not make claims without textual or mathematical proof. Significant assertions link back to recognized source texts (e.g., on Sefaria).
• Religiously neutral and respectful: We do not provide halachic (religious-legal) advice and do not evaluate Jewish practice. Judaism is diverse, and counting systems have evolved historically.
• Privacy by Design: This website does not collect personal data, uses no advertising networks, and does not require JavaScript to be fully readable.
• Editorial care: We do not use unverified machine translations for sensitive theological or historical terms.

Contact and Responsibility

This project is maintained and operated by:

• Publisher: Serge Vlassov
• Email Contact: [email protected]
• Branding & Design: by serge.vision with ♥

If you find errors, wish to suggest additions, or bring up a scholarly point of discussion, feel free to send us an email or suggest changes directly via our GitHub repository.