80909

Properties

Appears in sequences

• Primes whose consecutive digits differ by 8 or 9.at n=10A048420
• Primes having only {0, 6, 8, 9} as digits.at n=33A053580
• a(n) = Smallest nontrivial number k > 9 such that |first (leftmost) decimal digit of k - second digit + third digit - fourth digit ...| = n.at n=26A060982
• Smallest number m such that first digit - second digit + third digit - fourth digit ... (of m) = n.at n=26A061479
• a(n) = Smallest nontrivial number k > 9 such that first (leftmost) digit - second digit + third digit - fourth digit ... of k = n.at n=26A061882
• Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[2, 6,6]; short d-string notation of pattern = [266].at n=23A078849
• Primes p such that the differences between the 5 consecutive primes starting with p are (2,6,6,6).at n=9A078951
• List of primes p1 such that (p1,p2) are twin primes where both 2*p1+p2 and p1+2*p2 are primes.at n=27A174920
• Primes formed by an m-digit prime concatenated with its last (m-1) digits, for m > 1.at n=39A252667
• Product_{n>=1} (1 + x^n)^a(n) = 1 + x + x^2 + 2 * Sum_{n>=3} a(n)*x^n.at n=17A348755
• Primes having only {0, 8, 9} as digits.at n=6A385772
• Primes having only {0, 2, 8, 9} as digits.at n=36A386055
• Primes having only {0, 4, 8, 9} as digits.at n=40A386076
• Primes having only {0, 5, 8, 9} as digits.at n=32A386081
• Prime numbersat n=7917