100000

100000 is a natural number. In decimal notation it is written as 100000 or with a comma as 100,000. It equals 10^5, the fifth power of ten.

It is even and composite. Its prime factorization is 2^5 × 5^5, so it is divisible by 2 and by 5, among other numbers. The total number of positive divisors is (5+1)(5+1) = 36.

Representations in other bases include binary, which uses 17 bits because 2^16 = 65536 ≤ 100000 < 131072 = 2^17; in hexadecimal it is 0x186A0. In Roman numerals it is commonly written as C with a bar over it to indicate 100,000.

In practical terms, 100,000 is used as a round or benchmark figure. It is equal to 100 kilometers when measuring length in metric units, and 100,000 seconds equal 27 hours, 46 minutes, and 40 seconds. In statistics and finance, 100,000 is a common threshold or unit of account, serving as a convenient scale for data and calculations.