1621619

Properties

Appears in sequences

• Smaller of twin primes whose mean (average) is a multiple of A002110(6)=30030.at n=12A060232
• Primes of the form 4*k-1 such that 8*k-1, 16*k-1, 32*k-1 and 64*k-1 are also primes.at n=13A101995
• Conjoined Twin Primes: primes p such that p written in base 10 has a prefix q and a suffix r, where q and r are a pair of twin primes (in either order), and q and r overlap (i.e., strlen(q)+strlen(r)>strlen(p)).at n=7A250052
• Lesser of twin primes p such that d(p+1) > d(q+1) for all lessers of twin primes q < p, where d(n) is the number of divisors of n (A000005).at n=25A328329
• Prime numbersat n=122653