The next one is 6949.
19 191 193 197 199
6949 69491 69493 69497 69499
10111 101111 101113 101117 101119
15727 157271 157273 157277 157279
20149 201491 201493 201497 201499
24799 247991 247993 247997 247999
26041 260411 260413 260417 260419
26881 268811 268813 268817 268819
29587 295871 295873 295877 295879
29947 299471 299473 299477 299479
40213 402131 402133 402137 402139
41203 412031 412033 412037 412039
44257 442571 442573 442577 442579
46747 467471 467473 467477 467479
47701 477011 477013 477017 477019
49057 490571 490573 490577 490579
50023 500231 500233 500237 500239
51061 510611 510613 510617 510619
55921 559211 559213 559217 559219
66109 661091 661093 661097 661099
66643 666431 666433 666437 666439
73939 739391 739393 739397 739399
76819 768191 768193 768197 768199
79579 795791 795793 795797 795799
95947 959471 959473 959477 959479
---------
import sympy
def isprime(n):
return sympy.isprime(n)
primes = [i for i in range(1000000) if isprime(i)]
for p in primes:
s = str(p)
p1 = int(s+'1')
p3 = int(s+'3')
p7 = int(s+'7')
p9 = int(s+'9')
if p1 not in primes:
continue
if p3 not in primes:
continue
if p7 not in primes:
continue
if p9 not in primes:
continue
print(p,p1,p3,p7,p9)
Solution
