121687

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 10x + 9.at n=20A023329
• Primes that remain prime through 5 iterations of the function f(x) = 10x + 9.at n=6A023357
• Primes of the form 5n^2 + 7.at n=12A201485
• Number of parts in all partitions of n in which no part occurs more than nine times.at n=34A320612
• Prime numbersat n=11453