19131877

Properties

Appears in sequences

• Smallest prime p such that 3^n divides p^2 - 1.at n=12A125609
• Smallest prime p such that 3^n divides p^2 - 1.at n=13A125609
• Primes of the form 4*3^k + 1.at n=5A125734
• Smallest odd prime base q such that p^13 divides q^(p-1) - 1, where p = prime(n).at n=1A133863
• Smallest odd prime base q such that p^14 divides q^(p-1) - 1, where p = prime(n).at n=1A133864
• Largest prime p such that phi^n(p) = 2, where phi^n means n iterations of Euler's totient function.at n=15A136041
• Least prime p of the form c*3^n+1 with c not divisible by 3.at n=14A137990
• a(n) = 4*3^n + 1.at n=14A199108
• a(n) = 4*9^n+1.at n=7A199562
• Primes p such that the multiplicative order of 3 modulo p is 2 times a power of 3.at n=19A367649
• Prime numbersat n=1218875