444449

Properties

Appears in sequences

• Primes that contain digits 4 and 9 only.at n=9A020466
• Smallest n-digit prime containing only the digits 4 and 9, or 0 if no such prime exists.at n=5A036945
• Primes of the form identical digits followed by a 9.at n=11A090148
• Primes of the form 40*R_k + 9, where R_k is the repunit (A002275) of length k.at n=2A093402
• a(n) is the smallest prime greater than 4(10^n - 1)/9.at n=6A099658
• Near-repdigit primes with at least two 4's as the repeated digit.at n=6A105980
• Primes having only {4, 6, 9} as digits.at n=28A107666
• Primes with at least one digit appearing exactly five times in the decimal expansion.at n=25A161796
• a(n) = (4*10^n + 41)/9.at n=6A173776
• Largest n-digit prime with the most digits equal to 4.at n=5A178002
• Primes that do not divide any 10-digit pandigital number (i.e. any value in A050278).at n=19A292471
• k-digit primes with the same even digit repeated k-1 times and a single odd digit.at n=30A320256
• Prime numbers that are not repdigits with digits in nondecreasing order with the property that any nontrivial permutation of the digits gives a composite number.at n=37A364458
• Primes having only {4, 5, 9} as digits.at n=33A385793
• Primes having only {4, 8, 9} as digits.at n=29A385796
• Prime numbersat n=37300