1201

1201 is a natural number that follows 1200 and precedes 1202. It appears in various mathematical and practical contexts as a concrete example of an odd, prime integer.

In mathematics, 1201 is a prime number. It can be expressed as the sum of two squares: 24^2 + 25^2 = 576 + 625 = 1201. As a prime congruent to 1 modulo 4, this representation is consistent with Fermat’s theorem on sums of two squares. In different numeral systems, 1201 is written as 10010110001 in binary, 0x4B1 in hexadecimal, and MCCI in Roman numerals.

In calendar terms, 1201 refers to the year 1201 CE (Anno Domini), part of the early 13th century. During this period, the Julian calendar was in use in Europe, and political, religious, and social developments were shaping medieval societies across different regions, though specific events vary by locale.

The number 1201 also appears in various practical contexts, such as identifiers, codes, or model numbers in technology, manufacturing, and documentation. It serves as a concrete example of how a single integer can have distinct mathematical properties and historical or real-world usages.

See also: 1200, 1202.