67777777777
domain: N
Appears in sequences
- Smallest prime containing exactly n 7's.at n=10A037067
- Smallest prime ending in exactly n 7's.at n=9A065581
- Primes of the form identical digits preceded by a 6.at n=6A090154
- Primes of the form 6*10^k + 7*R_k, where R_k is the repunit (A002275) of length k.at n=3A093942
- Primes such that the outer 2 digits are k and k+1 and all inner digits are 7, where 0 < k < 9.at n=6A108824
- Smallest n-digit prime having at least n-1 digits equal to 7.at n=10A268705