Last Updated
：2025/11/19
septillion
Numeral
US
Japanese Meaning
米国、現代英国・オーストラリア（ショートスケール）の場合：1に24個のゼロが続く数、すなわち10の24乗（1兆兆）。 / 古い英国・オーストラリア（ロングスケール）の場合：1に42個のゼロが続く数、すなわち10の42乗（1京クインティリオン）。
（ plural ）
Quizzes for review
(US, modern British & Australian, short scale) A trillion trillion: 1 followed by 24 zeros, 10²⁴. / (dated British & Australian, long scale) A billion quintillion: 1 followed by 42 zeros, 10⁴².
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septillion
The simulation produced a septillion particles, a number equal to 1 followed by 24 zeros.
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The simulation produced a septillion particles, a number equal to 1 followed by 24 zeros.
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