+61 is a [natural number](/wiki/Natural_number) that follows 60 and precedes 62. This [prime number](/wiki/Prime_number) holds a unique place in mathematics and is the atomic number of the rare earth element Promethium.
+## See also
+- [Promethium](/wiki/Promethium)
+- [Atomic Number](/wiki/Atomic_number)
+- [Number Theory](/wiki/Number_theory)