Every one of these numbers is 1,000 times bigger than the one before it. The little number up top (the exponent) just counts how many zeros come after the 1.
Thousand
103 = 1,000 = thousand
1,000 — that's about how many students go to a big school.
Million
106 = 1,000,000 = million
A million seconds is about 11½ days.
Billion
109 = 1,000,000,000 = billion
A billion seconds is about 31½ years — nearly your grown-up's whole life!
Trillion
1012 = 1,000,000,000,000 = trillion
A trillion seconds is about 31,700 years — way before anyone invented writing.
Quadrillion
1015 = quadrillion (15 zeros)
Quintillion
1018 = quintillion (18 zeros)
Sextillion
1021 = sextillion (21 zeros)
Septillion
1024 = septillion (24 zeros)
Octillion
1027 = octillion (27 zeros)
Nonillion
1030 = nonillion (30 zeros)
Decillion
1033 = decillion (33 zeros)
💯 Googol
10100 = googol
A 1 followed by 100 zeros. There aren't even a googol atoms in your body!
🌀 Googolplex
10googol = googolplex
A 1 followed by a googol zeros. It's so big that if you tried to write out every zero, there wouldn't be enough room in the entire universe to fit them all — even one digit per atom!