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A061448 as a simple table

na(n)
12
223
331
4101
5103
6307
7701
81009
99001
1010007
1170001
12100003
13300007
14700001
151000003
163000017
177000003
1830000001
19100000007
20700000001
211000000007
227000000001
2310000000019
2490000000019
2590000000023
26300000000077

[2,23,31,101,103,307,701,1009,9001,10007,70001,
 100003,300007,700001,1000003,3000017,7000003,
 30000001,100000007,700000001,1000000007,
 7000000001,10000000019,90000000019,90000000023,
 300000000077]