What is believed to be impossible is something that has been tried many times, but still yet very difficult to find an answer, concluding that's where the phrase "nothing is impossible" came from. I don't know how to find the answer itself, but i can give a tip that when looking for an answer, look for the simplest one of all and base your answer from there. There's a missing link somewhere that could help someone find the answer, but that surely isn't me.

:--------------------: - not infinite, but still it stops somewhere
<-------------------> - infinite yes, but the numbers in integers can be considered infinite because of the numbers being able to go neg. or pos.