1,000,000,000 is written as 109 in scientific notation. In English, it's called a billion, while in South Asian English it's 100 crore. The SI prefix giga indicates 1,000,000,000 times the base unit
Googolplex is defined as 10^10^100 or one followed by 10^100 zeroes. Milton Sirotta originally defined it as "one, then writing zeroes until tired". Edward Kasner redefined it to its current value
English numerals include both regular words and borrowed terms. Numbers 21-99 are typically written as two words separated by hyphen. Hundreds and thousands remain singular regardless of preceding number
Graham's number G_{64} is defined as the 64th term of a sequence starting with 4. Number arose from Ramsey theory problem about hypercube dimensions. Graham proved upper bound F^{7}(12) in 1971. Martin Gardner created larger version in 1977, which Graham proved
Trillion is 1 with 12 zeros: 1,000,000,000,000. Quadrillion follows trillion with 15 zeros: 1,000,000,000,000,000. Numbers between trillion and quadrillion always include "trillion"
Large numbers follow a pattern: million, billion, trillion, quadrillion, quintillion. The prefix "quintillion" indicates the number of times multiplied by 1000. Numbers are written using powers of ten (e.g., 10^18 for quintillion)