353

353 is a natural number that follows 352 and precedes 354. It is an odd integer and in mathematics is classified as a prime number as well as a palindromic number in base 10.

In mathematics, 353 is a palindromic prime in base 10. It is congruent to 1 modulo 4, which by Fermat’s theorem implies it can be written as the sum of two squares: 353 = 17^2 + 8^2. In common numeral systems, 353 is represented as 101100001 in binary, 541 in octal, and 0x161 in hexadecimal. The Roman numeral representation is CCCLIII.

In addition to its numeric properties, 353 appears in various practical contexts. In telecommunications, +353 is the international calling code assigned to the Republic of Ireland, used when dialing into Ireland from other countries. The number can also be encountered in historical or cultural references that rely on standard numeric notation.

Overall, 353 is notable in number theory for being a prime that is also a palindrome in base 10, with straightforward representations in multiple bases and a recognized role in international dialing as the country code for Ireland.