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2. Mathematical table - Wikipedia

   en.wikipedia.org/wiki/Mathematical_table

   Tables containing common logarithms (base-10) were extensively used in computations prior to the advent of electronic calculators and computers because logarithms convert problems of multiplication and division into much easier addition and subtraction problems. Base-10 logarithms have an additional property that is unique and useful: The ...

3. Exponentiation - Wikipedia

   en.wikipedia.org/wiki/Exponentiation

   Exponentiation with base 10 is used in scientific notation to denote large or small numbers. For instance, 299 792 458 m/s (the speed of light in vacuum, in metres per second) can be written as 2.997 924 58 × 10 8 m/s and then approximated as 2.998 × 10 8 m/s. SI prefixes based on powers of 10 are also used to describe small or large quantities.

4. Tetration - Wikipedia

   en.wikipedia.org/wiki/Tetration

   In the third expression, ... iterated exponential notation is used to express them in base 10. The values containing a decimal point are approximate. ... (10 2.0692× ...

5. Numeral system - Wikipedia

   en.wikipedia.org/wiki/Numeral_system

   By using a dot to divide the digits into two groups, one can also write fractions in the positional system. For example, the base 2 numeral 10.11 denotes 1×2 1 + 0×2 0 + 1×2 −1 + 1×2 −2 = 2.75. In general, numbers in the base b system are of the form:

6. Positional notation - Wikipedia

   en.wikipedia.org/wiki/Positional_notation

   For example, 10 2 = 2; 10 3 = 3; 10 16 = 16 10. Note that the last "16" is indicated to be in base 10. The base makes no difference for one-digit numerals. This concept can be demonstrated using a diagram. One object represents one unit. When the number of objects is equal to or greater than the base b, then a group of objects is created with b ...

7. List of integer sequences - Wikipedia

   en.wikipedia.org/wiki/List_of_integer_sequences

   A Harshad number in base 10 is an integer that is divisible by the sum of its digits (when written in base 10). A005349: Factorions: 1, 2, 145, 40585, ...