Hi TF Scientist A great Hub, thank you. 10^6: Million. 10^9: Billion. 10^12 Trillion all appear in the Collins dictionary (“a definitive British English list of large numbers up to a Trillion!). I guess one thousand Trillion 10^15 (I think the Americans call it a Quadrillion), and one million trillion 10^18 are acceptable written / valid descriptions? Is there a definitive British English list of large numbers after a Trillion? / Where is it written? Many thanks in advance
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I had viewed: https://en.wikipedia....rd_dictionary_numbers , which refers to 10^15 (10 to the power of 15) as a Quadrillion, 10^18 as Quintillion, 10^21 as Sextillion etc. But are these words American English? rather than Bri