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  2. Scientific notation - Wikipedia

    en.wikipedia.org/wiki/Scientific_notation

    Because superscript exponents like 10 7 can be inconvenient to display or type, the letter "E" or "e" (for "exponent") is often used to represent "times ten raised to the power of", so that the notation m E n for a decimal significand m and integer exponent n means the same as m × 10 n. For example 6.022 × 10 23 is written as 6.022E23 or 6 ...

  3. Micro- - Wikipedia

    en.wikipedia.org/wiki/Micro-

    Micro (Greek letter μ, mu, non-italic) is a unit prefix in the metric system denoting a factor of 106 ... Base 10 Decimal Adoption [nb 1] Name Symbol quetta: Q ...

  4. Power of 10 - Wikipedia

    en.wikipedia.org/wiki/Power_of_10

    In decimal notation the nth power of ten is written as '1' followed by n zeroes. It can also be written as 10 n or as 1En in E notation. See order of magnitude and orders of magnitude (numbers) for named powers of ten. There are two conventions for naming positive powers of ten, beginning with 10 9, called the long and short scales. Where a ...

  5. Decimal - Wikipedia

    en.wikipedia.org/wiki/Decimal

    Place value of number in decimal system. The decimal numeral system (also called the base-ten positional numeral system and denary / ˈ d iː n ər i / [1] or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers (decimal fractions) of the Hindu–Arabic numeral system.

  6. English numerals - Wikipedia

    en.wikipedia.org/wiki/English_numerals

    Thus one-half would be written 0.5 in decimal, base ten notation, and fifty thousand as 50 000, and not 50.000 nor 50,000 nor 50000. ... 10 6: one million: one ...

  7. Mega- - Wikipedia

    en.wikipedia.org/wiki/Mega-

    Mega is a unit prefix in metric systems of units denoting a factor of one million (10 6 or 1 000 000). ... Base 10 Decimal Adoption [nb 1] Name Symbol quetta: Q: 10 30:

  8. Deca- - Wikipedia

    en.wikipedia.org/wiki/Deca-

    It is also a decimal unit prefix in the International System of Units (SI) denoting a factor of ten, ... 10 6: 1 000 000: 1873 kilo: k: 10 3: 1 000: 1795 hecto: h: 10 ...

  9. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    2.6 × 10 11 Qs (8.2 × 10 33 years): The smallest possible value for proton half-life consistent with experiment [19] 10 23 Qs ( 3.2 × 10 45 years ): The largest possible value for the proton half-life , assuming that the Big Bang was inflationary and that the same process that made baryons predominate over antibaryons in the early Universe ...