2×163

2×163 denotes the product of the integers 2 and 163. The result is 326. Doubling 163 is the same as 2 multiplied by 163, since multiplication by 2 adds the number to itself: 163 + 163 = 326.

163 is a prime number, so the prime factorization of 326 is 2 × 163. Consequently, 326 is not prime, but it is a semiprime (the product of two primes). It is an even number because it is divisible by 2.

In various numeral systems, 326 is represented as 326 in decimal, binary 101000110, and hexadecimal 0x146. In Roman numerals it is CCCXXVI.