51719

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 8x + 7.at n=17A023294
• Prime number spiral (clockwise, West spoke).at n=36A054570
• Let N = 1357911131517192123252729313335373941434547495153555759616365676971..., the concatenation of the odd numbers. a(n) is the n-digit number formed from the digits of N starting from the {n(n-1)/2 +1}th digit. Omit any leading zeros.at n=4A066553
• Lesser of twin primes P(k) and P(k+1) such that Sd(P(k)) + Sd(P(k+1)) = Sd(k) + Sd(k+1), where Sd(x) is the sum of digits of x.at n=10A277111
• Position of the first occurrence of n in A337474.at n=48A337476
• Prime numbersat n=5293