79365

Appears in sequences

• Numbers n such that the middle coefficient of the cyclotomic polynomial Phi_n(x) has a value not obtained for any smaller n.at n=35A095877
• Multiples of 5291.at n=15A178027
• Members of a pair (m,k) such that sigma(m) = sigma(k) = sigma(m+k), m < k where sigma = A000203.at n=31A239436
• Least positive number k such that k*n written in base 10 is either a repunit or of the form 1111....0000.at n=13A244927
• a(n) = the smallest number k such that k*n is a number with a string of 1's followed by a string of 0's.at n=13A276348
• Largest denominator used in the Egyptian fraction representation of 1-1/(2n+1) by the odd greedy expansion algorithm, without repeats.at n=17A287434