1265011073
domain: N
Appears in sequences
- Smallest prime factor of 10^n + 1.at n=64A038371
- Primes p for which the period of 1/p is a power of 2.at n=30A072982
- a(n) = 1 if 10^(2^n)+1 is prime, otherwise smallest prime factor of 10^(2^n)+1.at n=6A102050
- Smallest prime factor of 10^(2^n) + 1.at n=6A185121
- Irregular triangle read by rows: row n lists the distinct prime factors of the generalized Fermat number F_n(10) = 10^(2^n) + 1.at n=15A391444