https://eprint.iacr.org/2015/1018.pdf https://eprint.iacr.org/2015/1018.pdf "As pointed out in [57], there has never been a genuine implementation of Shor’s al

https://eprint.iacr.org/2015/1018.pdf https://eprint.iacr.org/2015/1018.pdf "As pointed out in [57], there has never been a genuine implementation of Shor’s algorithm. The only numbers ever to have been factored by that type of algorithm are 15 and 21, and those factorizations used a simplified version of Shor’s algorithm that requires one to know the factorization in advance..." If you have a clue what these factors are, you can build an implementation of Shor's algorithm for them, I guess.