Prime

Prime may refer to any of the following:

1. With a service or product, Prime is short for Amazon Prime.

2. When describing a number, prime is short for a prime number.

3. With a mark or a symbol, a single prime symbol represents the ft (feet) measurement, and a double prime represents inches. For example, if someone said they're 5′ 9″, it's the same as saying they're five feet nine inches. If the prime symbol is unavailable, it's often substituted with a single quote and quote.

Where are the prime and double prime keys on the keyboard?

These characters do not have dedicated keys on the keyboard and must be added through the operating system's special characters functionality.

If you are using Microsoft Windows, you can use the Character Map utility to insert special characters unavailable on the keyboard.

If you use macOS, press Alt/Option+E to get a single prime (′). Press Shift+Option+G to get double prime (″). You can also use the Character Viewer. To launch the Character Viewer, type Command+Control+Space. If you only see emoji, click the palette icon in the upper-right corner. Search for "prime."

In HTML

In HTML (hypertext markup language), to insert a single prime, use the HTML entity ′. To insert a double prime, use a capital P (″).

4. Alternatively called PR1ME, Prime Computer was the name of a computer company. See our Prime Computer company page for further information on this company.