prologic / Hash Collisions Probability

| Hash Size (bits) | Unique Hashes (2^n) | Approximate No. of Hashes for 50% Collision | Textual Length (Hex) | Textual Length (Base64) | Textual Length (Base32) | |------------------|--------------------------|---------------------------------------------|----------------------|-------------------------|-------------------------| | 8 | 256 | 12 | 2 | 4 | 4 | | 16 | 65,536 | 300 | 4 | 8 | 8 | | 32 | 4.29 billion | 78,000 | 8 | 12 | 13 | | **35** | **34.36 billion** | **222,437** | **9** | **12** | **15** | | 40 | 1.10 trillion | 1.23 million | 10 | 16 | 16 | | 48 | 281 trillion | 19.6 million | 12 | 16 | 20 | | 56 | 72 quadrillion | 313 million | 14 | 20 | 23 | | 64 | 18.4 quintillion | 5.16 billion | 16 | 24 | 26 | | 72 | 4.72 septillion | 82.6 billion | 18 | 24 | 29 | | 128 | 3.40 quattuordecillion | 22 quintillion | 32 | 44 | 52 | | 256 | 1.16 ducentillion | 5.4 undecillion | 64 | 88 | 103 |