# Number+to+be+divided

51

**Reynolds number**— n. 〚after O. Reynolds (1842 1912), Eng physicist〛 a dimensionless parameter used to determine the nature of fluid flow along surfaces and around objects, as in a wind tunnel * * * In fluid mechanics, a number that indicates whether the flow of a… …52

**Social Security number**— In the United States, a Social Security number (SSN) is a 9 digit number issued to citizens, permanent residents, and temporary (working) residents under section 205(c)(2) of the Social Security Act, codified as uscsub|42|405|c|2. The number is… …53

**Composite number**— A composite number is a positive integer which has a positive divisor other than one or itself. In other words a composite number is any positive integer greater than one that is not a prime number. So, if n > 0 is an integer and… …54

**400 (number)**— ← 399 401 → 400 List of numbers Integers ← 0 100 200 …55

**Bernoulli number**— In mathematics, the Bernoulli numbers Bn are a sequence of rational numbers with deep connections to number theory. They are closely related to the values of the Riemann zeta function at negative integers. There are several conventions for… …56

**International Standard Book Number**— ISBN redirects here. For usage of ISBNs in Wikipedia, see Wikipedia:ISBN. A 13 digit ISBN, 978 3 16 148410 0, as represented by an EAN 13 bar code. The International Standard Book Number (ISBN) is a unique[1][2 …57

**Winding number**— The term winding number may also refer to the rotation number of an iterated map. This curve has winding number two around the point p. In mathematics, the winding number of a closed curve in the plane around a given point is an integer… …58

**Triangular number**— The first six triangular numbers A triangular number or triangle number numbers the objects that can form an equilateral triangle, as in the diagram on the right. The nth triangle number is the number of dots in a triangle with n dots on a side;… …59

**Catalan number**— For names of numbers in Catalan, see List of numbers in various languages#Occitano Romance. In combinatorial mathematics, the Catalan numbers form a sequence of natural numbers that occur in various counting problems, often involving recursively… …60

**60 (number)**— 60 (sixty) (  Listen (help·info)) is the natural number following 59 and preceding 61. Being three times twenty, 60 is called three score in some older literature …