Update primality_tests.md

siddharthabhi30 · adamant-pwn · commit 42ed8ee0c513 · 2024-02-23T22:34:12.000+01:00
Adding questions related to primality test.
diff --git a/src/algebra/primality_tests.md b/src/algebra/primality_tests.md
@@ -217,4 +217,5 @@ However, since these numbers (except 2) are not prime, you need to check additio
 
 ## Practice Problems
 
-- [SPOJ - Prime or Not](https://www.spoj.com/problems/PON/)
+- [SPOJ - Prime or Not](https://www.spoj.com/problems/PON/)
+- [Project euler - Investigating a Prime Pattern](https://projecteuler.net/problem=146)
