Concatenate two primes is also prime: Difference between revisions
→{{header|Ring}}
(Created page with "{{Draft task}} ;Task:Concatenate two primes (p1,p2) is also prime, where '''p1,p2 < 100''' <br><br> =={{header|Ring}}== <lang ring> load "stdlib.ring" see "working..." + nl...") |
|||
Line 22:
p2 = number(ps21)
if isprime(n) and isprime(m)
if isprime(p1)
pf = find(prime,p1)
if pf < 1
add(prime,p1)
ok▼
ok
if pf
ok
▲ ok
ok
next
|