Problem 2008. Number Persistence
A number's persistence is the number of steps required to reduce it to a single digit by multiplying all its digits to obtain a second number, then multiplying all the digits of that number to obtain a third number, and so on until a one-digit number is obtained.
For example, 66 has a persistence of three because it requires three steps to reduce it to one digit: 66-36-18-8.
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers78
Suggested Problems
-
Back to basics 9 - Indexed References
435 Solvers
-
Make a random, non-repeating vector.
8451 Solvers
-
745 Solvers
-
302 Solvers
-
1436 Solvers
More from this Author12
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!