Anomaly

An anomaly is an element that is stable, particularly after lead. They are called anomalies because they deviate from the usual pattern. They occur every 495 protons

There are also anomalic anomalies, which occur every 1060 elements, and occur in pairs.

What about ?
Any element with an extremely long half-life of over 250 years is called a subanomaly. Examples include:
 * Rubiinium
 * MrKathooline
 * Shrekium
 * PewDiePium
 * Rozdyium
 * Garfieldium
 * Portlium
 * WASP-12bium
 * WASP-12bium