Ducentillion

*Not to be confused with duocentillion.*
A **ducentillion** or **dihectillion** is equal to 10603 in short scale, 101,200 in long scale, or E603 in Hyper-E notation. It is equal to one followed by 603 zeros. It is 604 digits long. The name is equal with Conway-Wechsler System, but it seems to be developed independently.

Landon Curt Noll coined the name **duocentillion** for this number (not to be confused with Bowers' duocentillion, which equals 10309).

Aarex Tiaokhiao gave the name **bicemillion**, referring to the value of this number.

10603 is a long scale *centilliard* and 101200 is also called a *bicentillion* in the Epstein system so as to avoid ducentillion/duocentillion confusion,with the principle  "*Latin prefixes add,Greek prefixes multiply*".The Epstein system *centillia-illion* is 1,000,00010603 and *bicentillio-illion* is 1,000,000101200.

Written out in decimal form ducentillion (in the short scale) is:

1000Template:100 zerosTemplate:500 zeros
In long scale:

1Template:200 zeros0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

## Sources

1. ↑ https://sites.google.com/site/aarexnumbers/home/ch2/at1i
2. ↑ Illion Numbers
3. ↑ [1]
4. ↑ English names of the first 10000 powers of 10 - American System without dashes
5. ↑ English names of the first 10000 powers of 10 - European System without dashes
6. ↑ Aarex Tiaokhiao's illion numbers
7. ↑ [2]

## See also

Standard -illion numbers 103n + 3 (106n)

Main article: -illion**1–9:** million · billion · trillion · quadr · quint · sext · sept · oct · non
**10–19:** decillion · undec · duodec · tredec · quattuordec · quindec · sexdec · septendec · octodec · novemdec
**20–29:** vigintillion · unvigint · duovigint · trevigint · quattuorvigint · quinvigint · sexvigint · septenvigint · octovigint · novemvigint
**30–39:** trigintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**40–49:** quadragintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**50–59:** quinquagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**60–69:** sexagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**70–79:** septuagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**80–89:** octogintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**90–99:** nonagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**100–109:** centillion · un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-
**110–119:** decicentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**120–129:** viginticentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**130–139:** trigintacentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**140–149:** quadragintacentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**150–159:** quinquagintacentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**160–169:** sexagintacentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**170–179:** septuagintacentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**180–189:** octogintacentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**190–199:** nonagintacentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**200–900:** **ducent** · trecent · duotrigintatrecent · quadringent · quingent · sescent · septuagintisescent · septingent · octingent · nongent
**1,000–1024:** millillion · dumill · trimill · quadrimill · quadrimilliquattuordecicent · quinmill · sexmill · septimill · octimill · nonimill · myr · undecimill · duodecimill · dumyr · trimyr · quadrimyr · quinmyr · sexmyr · septimyr · octimyr · nonimyr · centimill · ducentimill · trecentimill · quadringentimill · quingentimill · sescentimill · septingentimill · octingentmill · nongentimill · micr · nan · pic · femt · att · zept · yoct

Standard -illion numbers 10603 (10900)

Main article: -illion**200–209:** **ducentillion** (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**210–219:** deciducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**220–229:** vigintiducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**230–239:** trigintaducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**240–249:** quadragintaducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**250–259:** quinquagintaducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**260–269:** sexagintaducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**270–279:** septuagintaducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**280–289:** octogintaducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
**290–299:** nonagintaducentillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)