Number Chain
AllPages
RecentChanges
Links to this page
Edit this page
Search
Entry portal
Advice For New Users
A
Number Chain
is created by having a rule that takes any
number
to some other (not necessarily different)
number
. Then we start somewhere and see where we end up.
For example:
if every
number
gets doubled,
every
number chain
just goes off to
infinity
.
if every
number
gets halved (rounding up),
every
number chain
ends with 1.
if every
number
gets halved (rounding down),
every
number chain
ends with 0.
Now suppose we use the following rule:
If
n
is even, halve it.
If
n
is odd, send it to
3n+1
Questions:
Where does 7 go?
Where does 17 go?
Where does 27 go?
What are the possibilites?
Where does -5 go?
It is an unproven
conjecture
that every positive
number
eventually ends at 1.
See also:
Happy Number
.
Links to this page
/
Page history
/
Last change to this page
Recent changes
/
Edit this page
(with sufficient authority)
All pages
/
Search
/
Change password
/
Logout