97044

Appears in sequences

• Numbers k such that 10^k + 5*R_k + 4 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=29A102938
• Self-generated: 1=1*1; 2=1*1+1*1; 5=1*2+2*1+1*1; 12=1*5+2*2+2*1+1*1; 35=1*12+2*5+5*2+2*1+1*1; 97=1*35+2*12+5*5+5*2+2*1+1*1; ...at n=11A131267