How is quadrillion written in standard form?

  • In countries that use the long scale (based on powers of a million) like Europe:
1 quadrillion = (1 million)4

= (106)4

= 1 x 1024

  • In countries that use the short scale (based on powers of a thousand plus one) like USA:
1 quadrillion = (1 thousand)4+1

= (103)5

= 1 x 1015