11Axx Elementary number theory, {For analogues in number fields, See 11R04} ( 0 Dok. )

• 11A05 Multiplicative structure; Euclidean algorithm; greatest common divisors ( 0 Dok. )
• 11A07 Congruences; primitive roots; residue systems ( 0 Dok. )
• 11A15 Power residues, reciprocity ( 0 Dok. )
• 11A25 Arithmetic functions; related numbers; inversion formulas ( 0 Dok. )
• 11A41 Primes ( 0 Dok. )
• 11A51 Factorization; primality ( 0 Dok. )
• 11A55 Continued fractions, {For approximation results, See 11J70; See also 11K50, 30B70, 40A15} ( 0 Dok. )
• 11A63 Radix representation; digital problems, {For metric results, See 11K16} ( 0 Dok. )
• 11A67 Other representations ( 0 Dok. )
• 11A99 None of the above but in this section ( 0 Dok. )