49999

Properties

Appears in sequences

• Primes that contain digits 4 and 9 only.at n=6A020466
• Trimorphic numbers: n^3 ends with n. Also m-morphic numbers for all m > 5 such that m-1 is not divisible by 10 and m == 3 (mod 4).at n=40A033819
• Smallest prime containing exactly n 9's.at n=4A037071
• Numbers having four 9's in base 10.at n=4A043528
• Primes with multiplicative persistence value 6.at n=16A046506
• Primes whose digits are composite; primes having only {4, 6, 8, 9} as digits.at n=35A051416
• Smallest number whose sum of digits is n.at n=40A051885
• Trimorphic but not bimorphic nor automorphic.at n=31A056032
• Primes at which sum of digits strictly increases.at n=23A061248
• Smallest prime ending in exactly n 9's.at n=3A065582
• Smallest prime with digit sum n, or 0 if no such prime exists.at n=39A067180
• The smallest prime with a possible given digit sum.at n=26A067523
• Smaller of two consecutive primes which have no common digits.at n=19A068803
• Primes with either no internal digits or all internal digits are 9.at n=54A069684
• Smallest prime whose digital sum is equal to the n-th composite number, or 0 if no such prime exists.at n=26A073867
• Numbers n such that all the divisors of n appear as substrings in n^3.at n=12A074493
• Numbers k such that the number of primes between k and 2k (inclusive) is equal to the number of primes between k and reverse(k) (inclusive).at n=39A074814
• Primes of the form 2^r*5^s - 1.at n=17A077313
• a(n) = smallest k such that 2k has digit sum = n.at n=43A077491
• Primes of the form identical digits preceded by a 4.at n=8A090152