# zmetcalf/Truncatable-Primes

> http://projecteuler.net/problem=37 - The number 3797 has an interesting property. Being prime itself, it is possible to continuously remove digits from left to right, and remain prime at each stage: 3797, 797, 97, and 7. Similarly we can work from right to left: 3797, 379, 37, and 3.  Find the sum of the only eleven primes that are both truncatable from left to right and right to left.  NOTE: 2, 3, 5, and 7 are not considered to be truncatable primes.

- **Canonical URL**: https://githubrepo.cloud/repo/zmetcalf/Truncatable-Primes
- **GitHub Repository**: https://github.com/zmetcalf/Truncatable-Primes
- **Maintainer / Creator**: https://github.com/zmetcalf
- **Discovered On**: Sep 28, 2026

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