1187

1187 is the natural number that follows 1186 and precedes 1188. It is a prime number.

In the calendar year 1187 CE, several events in the Middle East and the Crusader States had a lasting impact on the history of the region. On July 4, 1187, the Battle of Hattin near Tiberias saw Saladin and the Ayyubid forces defeat the Crusader army led by Guy of Lusignan. The defeat left the Crusader states in a vulnerable position, and later that year Jerusalem was captured by Saladin after a siege. The loss of Jerusalem was a major turning point in the Crusades and stimulated broader European interest in renewed military campaigns in the Levant.

The events of 1187 contributed to the call for a new crusade in the decades that followed. This ultimately led to the Third Crusade, which began in 1189 and involved several European monarchs attempting to regain access to holy sites and reestablish Christian presence in parts of the region. While it achieved some coastal successes, it did not restore control of Jerusalem to the Crusaders.

As a number, 1187 is recognized for its mathematical property as a prime number, meaning it has no positive divisors other than 1 and itself. In Roman numerals, it can be expressed as MCLXXXVII.