84961

Properties

Appears in sequences

• Primes of the form 6*k^2 - 5.at n=33A201791
• Number of 2 X 2 matrices with all terms in {0,1,...,n} and even determinant.at n=18A210369
• Primes which become squares when the digits are rotated once to the right.at n=36A234925
• Greatest prime factor of n^10+1.at n=27A240553
• Primes of form n^2 + 6561.at n=26A256837
• a(0)=0, a(1)=1, a(n) = min{5 a(k) + (5^(n-k)-1)/4, k=0..(n-1)} for n>=2.at n=25A259669
• a(n) = gpf(1 + Product_{k=0..4} prime(n+k)), where gpf is greatest prime factor and prime(i) is the i-th prime.at n=15A261210
• Primes containing nonprime digits (from 1 to 9) in their decimal expansion and whose digits are distinct, i.e., consisting of only digits 1, 4, 6, 8, 9.at n=33A323391
• a(n) = Sum_{k=1..n} floor(n/k)^k.at n=27A345176
• Prime numbersat n=8273