10001st prime

2014-09-11

Problem 007: 10001st prime

Description:

By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.

What is the 10 001st prime number?

Solution:

v
# ... #
. . . .
.  .  .
. . . .
# ... #
                                                                             v                                <
>"d"55+*:10p3"2"*:20p*00p230p" ":01p11p10g5:+*1+50pv              > 030p 040p>30g1+:30p:10g%\10g/1+g"X"-      |
v                                                  <             _^#`g03g00 <|p+1/g01\%g01:g03"0"-p04:+1g04g05<
> "X" 30g:10g%\10g/1+p30g >30g+ : 00g\`     #v_$>30g1+:30p:10g%\10g/1+g" "- |>30g.@
                          ^p+1/g01\%g01:\" ":<  ^                           <

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Explanation:

Finally a opportunity to use my favorite algorithm: The sieve of Eratosthenes.

Interpreter steps:	21 915 385
Execution time (BefunExec):	7.63s (2.87 MHz)
Program size:	1000 x 156
Solution:	104743
Solved at:	2014-09-11