461 is a prime number.
461 has a representation as a sum of two squares: 461 = 102 + 192.
461 and 463 form a twin prime pair.
461 is the hypotenuse of a primitive Pythagorean triple: 4612 = 2612 + 3802.
461 is the largest number for which ((102n) + 1)/101 is known to be a prime number.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3fva0qKLUFURaGf6rEB1XT4q8g7ayadRKJG_pcl3r6KiY3QtjAZIpQh-aPjK1cGXtHPi1UL2gGvWNncax6b-QkSXdf_x4vtdrFdSaoIeKMs010CoLyWUPTcSQDdWiBkSD5SfVEtJin94/s200/n0461.jpg)
Source: Prime Curios!