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"Quad" means "four", thus:

  • In those countries that use the long scale (based on powers of million) like Europe:
quadrillion = millionfour = (106)4 = 1024

so a quadrillion is 10 to the power of 24.

  • In those countries that use the short scale (based on powers of thousand) like USA:
quadrillion = thousandfive = (103)(4+1) = 1015

so a quadrillion is 10 to the power of 15.

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13y ago

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