# 2. 1. 2. | ../robertwalker/ratios_with_factors | Show tree |
Enter a single value in cents, to see succesive approximations to it.
Alternatively, enter a scale, and then the most accurate approximation will be shown for each entry in the scale.
Alternatively, enter values as ratios, e.g. to find 7 limit approximations to 11 limit ratios etc..
Use the browser stop button if you need to halt the calculation and try again.
List all the primes you want to use as factors, or if you want to see all successive approximations, leave the primes field blank.
To set a maximum power for a prime, do it like this: "2^8 3^5" to set max powers of 2^8 and 3^5.
To exclude a prime, show it as a negative number. E.g. use -7 to search for all numbers except those divisible by 7. This can be combined with the positive primes, e.g. use 3 -9 to allow any multiple of 3, except for those that are a multiple of 9 (not sure why one would want to do it, but it comes for free!).
The entries in the factors field can also be composite.
By way of example, if you enter 6 as a value, you will find ratios with denumerator or denumerator a multiple of 6 .