1283

1283 can refer to the positive integer or to the year AD 1283. In mathematics, 1283 is a prime number. It is odd and has exactly two positive divisors: 1 and itself. It is not divisible by any prime up to its square root (approximately 35.8), including 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31. In decimal notation its digits are 1, 2, 8, and 3, which sum to 14, indicating it is not divisible by 3 or 9. Represents in other bases, 1283 is 10100000011 in binary, 2403 in octal, and 0x503 in hexadecimal. In Roman numerals it is written MCCLXXXIII.

As a year, 1283 falls in the late medieval period in the Julian calendar. It marks a point within the broader historical landscape of the 13th century, a time characterized by ongoing political, social, and cultural developments across Europe, the Byzantine world, the Islamic world, and parts of Asia. Specific regional events from that year are recorded in historical chronicles and vary by source.

In summary, 1283 is primarily notable as a prime number with distinct representations across numeral systems, and it also designates a year in the late Middle Ages.