# a+certain+number+of

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**Colossally abundant number**— In mathematics, a colossally abundant number (sometimes abbreviated as CA) is a natural number that, in some rigorous sense, has a lot of divisors. Formally, a number n is colossally abundant if and only if there is an ε > 0 such… …92

**Uniform number (Major League Baseball)**— Like in many sports, a baseball player s (or coach s) uniform number has the purpose of identifying the player. However, it has come over time to have a much more significant meaning to the player and fans. A number can be symbolic of a player s… …93

**Atomic number**— See also: List of elements by atomic number An explanation of the superscripts and subscripts seen in atomic number notation. In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the… …94

**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 …95

**1 (number)**— One redirects here. For other uses, see 1 (disambiguation). 1 −1 0 1 2 3 4 5 6 7 8 9 → List of numbers Integers …96

**Palindromic number**— A palindromic number or numeral palindrome is a symmetrical number like 16461, that remains the same when its digits are reversed. The term palindromic is derived from palindrome, which refers to a word like rotor that remains unchanged under… …97

**15 (number)**— This article is about the number 15. For the year, see 15. For other uses, see 15 (disambiguation). ← 14 16 → 15 ← …98

**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 …99

**Magnetic quantum number**— In atomic physics, the magnetic quantum number is the third of a set of quantum numbers (the principal quantum number, the azimuthal quantum number, the magnetic quantum number, and the spin quantum number) which describe the unique quantum state …100

**Pell number**— In mathematics, the Pell numbers and companion Pell numbers (Pell Lucas numbers) are both sequences of integers that have been known since ancient times. They are defined by a recurrence relation similar to that for the Fibonacci numbers, and… …