A Python library that generates that generates sequences of truncatable prime numbers and derivatives of the sequences in the form of a package that can be installed and imported.
A truncatable prime is still prime when number is truncated. For example, 317 is a left truncatable prime because 17 and 7 are prime. It is also a right truncatable prime because 31 and 3 are prime.
The intention of this library is to provide code that is reasonably efficient and readable. It is not difficult to track down cryptic one-liner code that produces identical results.
Python 3 is assumed.
Using the source code from github
git clone https://github.com/harry-zuzan/trprimes.git cd trprimes python setup.py install
pip install trprimes
from trprimes import trunc # the number of left truncatable primes trunc.count_ltrunc() # the largest of left truncatable prime trunc.largest_ltrunc() # iterate through left truncatable primes in ascending order ltp = trunc.ordered_ltrunc() next(ltp)