1251st

The number 1251 is an integer following 1250 and preceding 1252. In mathematics, it is a composite number. Its prime factorization is 3 * 417, which can be further broken down to 3 * 3 * 139. Therefore, the prime factors of 1251 are 3, 3, and 139. The divisors of 1251 are 1, 3, 9, 139, 417, and 1251.

The year 1251 AD was a common year in the Julian calendar. Significant events in this year included the death of the Danish king Abel and the accession of his son Eric IV. In England, the foundation of the Royal Hospital was laid. The Mongol Empire continued its expansion during this period.

In other contexts, "1251st" could refer to an ordinal position, such as the 1251st item in a sequence or the 1251st occurrence of an event. Without further context, its meaning is solely dependent on the specific enumeration being referenced.