499999993

Properties

Appears in sequences

• Positive integers n for which n = f(n), where f(n) is the total number of 4's required when writing out all numbers between 0 and n.at n=9A101641
• Primes of the form 5*10^k-7.at n=3A108837
• The largest prime factor among all composites <= 10^n.at n=8A136023
• Prime numbersat n=26355867