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Symbol | Definition |
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≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
Yottasecond is equal to 1024 second (unit of time), comes from a combination of the metric prefix yotta (Y) with the second (s). Plural name is yottaseconds with symbol is Ys.
Gigasecond is equal to 1 000 000 000 second (unit of time), comes from a combination of the metric prefix mega (M) with the second (s). Plural name is gigaseconds with symbol is Ms.