99996

Appears in sequences

• Largest integer with n digits and exactly n prime factors (counted with multiplicity).at n=4A036337
• Numbers m such that m^2 can be obtained from m by inserting an internal block of (contiguous) digits.at n=29A045953
• Numbers k such that k^2 can be obtained from k by inserting a block of digits.at n=37A046838
• a(n) is the largest number which can be formed with no zeros, using least number of digits and having digit sum = n.at n=41A061219
• a(n)^2 + 1 is largest prime of the form x^2 + 1 <= 10^n.at n=9A083845
• 5-almost primes with semiprime digits (digits 4, 6, 9 only).at n=35A111697
• Numbers k such that k concatenated with k-6 gives the product of two numbers which differ by 7.at n=11A116119
• Numbers k such that k concatenated with itself gives the product of two numbers which differ by 5.at n=12A116158
• Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-5.at n=11A116256
• Numbers k such that k*(k+5) gives the concatenation of a number m with itself.at n=12A116289
• Numbers k such that k and k^2 use only the digits 0, 1, 2, 6 and 9.at n=38A136830
• a(n) is the largest 5-digit number with exactly n divisors, or a(n) = 0 if no such number exists.at n=23A182698
• Monotonic ordering of nonnegative differences 10^i-4^j, for 40>=i>=0, j>=0.at n=26A192172
• G.f. satisfies: A(x) = (1+x+x^2) * A(x^2)^2.at n=45A237651