7 (seven) is a number, numeral, and glyph that represents the number. 路 the number 7 is often considered lucky, and it has a definite mystique, perhaps because it is a prime number鈥攖hat is, it cannot be obtained by multiplying two smaller numbers together. In addition, it is classified as a real number, [3] distinguishing it from imaginary numbers. Learn to count up to and down from seven. The most of the code is under the gnu lgpl license. 7 (seven) is the natural number following 6 and preceding 8. Created by teachers, learn how to show 7 in a ten frame. 7-zip is free software with open source. Read 7-zip license information. Some parts of the code are under the bsd 3-clause license. It is an integer and a cardinal number, that is, a number that is used for counting. The seven classical planets resulted in seven being the number of days in a week. As an early prime number in the series of positive integers, the number seven has symbolic associations in religion, mythology, superstition and philosophy. It is the only prime number preceding a cube. Learn to recognize and understand number 7. It is the natural number [1] that follows 6 and precedes 8. Also there is unrar license restriction for some parts of the code. 路 7-zip is a file archiver with a high compression ratio.