1122659

Properties

Appears in sequences

• Smallest prime beginning a complete Cunningham chain of length n (of the first kind).at n=6A005602
• Primes that remain prime through 5 iterations of function f(x) = 2x + 1.at n=6A023330
• a(n) = smallest prime p such that the first n iterates of p under x->2x+1 are all primes.at n=6A057331
• Initial (unsafe) primes of Cunningham chains of first type with length exactly 7.at n=0A059767
• Smallest number whose Sophie Germain degree (see A063377) is n.at n=7A063378
• 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=11A101995
• Numbers n such that n remains prime through 6 iterations of function f(x) = 2x + 1.at n=0A278932
• Indices of records in A063377.at n=3A339581
• Prime numbersat n=87359