74821

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of the function f(x) = 9x + 8.at n=23A023326
• Primes for which only three iterations of 'Prime plus its digit sum equals a prime' are possible.at n=17A048525
• Value of C in y = x^2 + 9x + C such that y is prime for all x = 0 to 5.at n=21A097437
• Centered 20-gonal (or icosagonal) primes.at n=19A264845
• Prime numbersat n=7377