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Link:http://output.to/sideway/default.asp?qno=140500001 Additive Primes
Additive
Primes
Additive Primes
are primes such that the sum of digits is a prime
|
Additive Prime |
Prime |
Sum |
|
2 |
|
2=2 |
|
3 |
|
3=3 |
|
5 |
|
5=5 |
|
7 |
|
7=7 |
|
11 |
|
2=1+1 |
|
|
13 |
4=1+3 |
|
|
17 |
8=1+7 |
|
|
19 |
10=1+9 |
|
23 |
|
5=2+3 |
|
29 |
|
11=2+9 |
|
|
31 |
4=3+1 |
|
|
37 |
10=3+7 |
|
41 |
|
5=4+1 |
|
43 |
|
7=4+3 |
|
47 |
|
11=4+7 |
|
|
53 |
8=5+3 |
|
|
59 |
14=5+9 |
|
61 |
|
7=6+1 |
|
67 |
|
13=6+7 |
|
|
71 |
8=7+1 |
|
|
73 |
10=7+3 |
|
|
79 |
16=7+9 |
|
83 |
|
11=8+3 |
|
89 |
|
17=8+9 |
|
|
97 |
16=9+7 |
|
|
101 |
2=1+0+1 |
|
|
103 |
4=1+0+3 |
|
|
107 |
8=1+0+7 |
|
|
109 |
10=1+0+9 |
|
113 |
|
5=1+1+3 |
|
|
127 |
10=1+2+7 |
|
131 |
|
5=1+3+1 |
|
137 |
|
11=1+3+7 |
|
139 |
|
13=1+3+9 |
|
|
149 |
14=1+4+9 |
|
151 |
|
7=1+5+1 |
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