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Learning without distractions
  1. 1 3:35 Number Theory Introduction Glenn Olson · 187.4K views
  2. 2 1:16 A1–Subsets of Numbers Glenn Olson · 62.5K views
  3. 3 2:53 A2–Evens, Odds, Perfect Squares Glenn Olson · 51.2K views
  4. 4 1:50 A3–Pythagorean Triples Glenn Olson · 44.5K views
  5. 5 5:30 B1–Divisibility Glenn Olson · 49.4K views
  6. 6 3:16 B2–More Divisibility Glenn Olson · 33.7K views
  7. 7 6:07 B3–Even More Divisibility Glenn Olson · 29.4K views
  8. 8 3:42 B4–Fun Divisibility Problem Glenn Olson · 26.2K views
  9. 9 8:00 C1–Primes Glenn Olson · 29.5K views
  10. 10 4:26 C2–List of Primes From 1-100 Glenn Olson · 20K views
  11. 11 5:23 C3–More Primes Glenn Olson · 18.5K views
  12. 12 1:46 C4–Factor Tree and Division Ladder Glenn Olson · 17.3K views
  13. 13 3:51 C5–When to Stop Checking for Prime Divisibility Glenn Olson · 16.7K views
  14. 14 3:32 C6–Prime Factors Glenn Olson · 15.5K views
  15. 15 4:06 C7–Reduce Fractions to Lowest Terms Glenn Olson · 13.7K views
  16. 16 2:11 C8–Formula for Generating “Some” Primes Glenn Olson · 16.4K views
  17. 17 2:16 C9–Goldbach’s Conjecture Glenn Olson · 37.8K views
  18. 18 4:28 D1–Greatest Common Divisor Glenn Olson · 18.7K views
  19. 19 2:19 D2-Greatest Common Divisor of Three Numbers Glenn Olson · 30.6K views
  20. 20 2:26 E1–Basis of The Euclidean Algorithm Glenn Olson · 20.4K views
  21. 21 2:22 E2–The Euclidean Algorithm Glenn Olson · 18.3K views
  22. 22 2:24 E3–More on The Euclidean Algorithm Glenn Olson · 13.8K views
  23. 23 3:54 E4–Even More on The Euclidean Algorithm Glenn Olson · 12.7K views
  24. 24 4:30 F1–Least Common Multiple Glenn Olson · 12.6K views
  25. 25 2:22 F2–Least Common Multiple With Variable Glenn Olson · 10.1K views
  26. 26 2:04 F3–Least Perfect Square Common Multiple Glenn Olson · 10.8K views
  27. 27 2:16 F4–Fun Product Problem Glenn Olson · 9.7K views
  28. 28 3:03 G1–Shortcuts for Finding GCD and LCM Glenn Olson · 13.5K views
  29. 29 3:17 G2–Relationship Between GCD and LCM Glenn Olson · 10.8K views
  30. 30 2:54 G3–Solving Problems Involving GCD and LCM Glenn Olson · 9.1K views
  31. 31 4:54 H1–Explore Total Number of Factors Glenn Olson · 10.2K views
  32. 32 3:04 H2–Apply Formula to Find Total Number of Factors Glenn Olson · 10.5K views
  33. 33 3:16 H3–More Challenging Problems With Total Number of Factors Glenn Olson · 8.4K views
  34. 34 2:34 H4–Fun Problem With Total Number of Divisors and Primes Glenn Olson · 7.8K views
  35. 35 3:28 I1–Units Digit Glenn Olson · 16.4K views
  36. 36 3:39 I2–More on Last Digit Glenn Olson · 8.3K views
  37. 37 3:42 I3–Even More With Units Digit Glenn Olson · 7.1K views
  38. 38 1:35 I4–Units Digit Problem With Two Numbers Glenn Olson · 6.6K views
  39. 39 1:36 I5–Units Digits and Perfect Squares Glenn Olson · 7.7K views
  40. 40 3:15 I6–Units Digits and Factorials Glenn Olson · 9.2K views
  41. 41 1:15 I7–Last Two Digits Glenn Olson · 7K views
  42. 42 3:10 J1–Basic Remainder Problem Glenn Olson · 9.1K views
  43. 43 2:01 J2–Basic Remainder Problem Glenn Olson · 7.2K views
  44. 44 2:38 J3–Basic Remainder Problem Glenn Olson · 6.8K views
  45. 45 2:13 J4–More Advanced Remainder Problem Glenn Olson · 7K views
  46. 46 2:46 J5–More Advanced Remainder Problem Glenn Olson · 6.1K views
  47. 47 3:47 J6–More Advanced Remainder Problem Glenn Olson · 6.3K views
  48. 48 3:28 K1–Exploring Trailing Zeros Glenn Olson · 7.4K views
  49. 49 3:01 K2–Trailing Zeros Glenn Olson · 5.8K views
  50. 50 1:39 K3–More on Trailing Zeros Glenn Olson · 5.1K views
  51. 51 2:30 K4–Trailing Zeros With Factorizations Glenn Olson · 5.3K views
  52. 52 3:58 K5–Shortcut for Trailing Zeros Glenn Olson · 34.8K views
  53. 53 3:15 K6–Shortcut for Trailing Zeros Glenn Olson · 6K views
  54. 54 3:18 K7–Advanced Problem With Trailing Zeros Glenn Olson · 5.3K views
  55. 55 2:23 L1–How to Count Consecutive Integers Glenn Olson · 6.8K views
  56. 56 2:22 L2–How to Count the Number of Multiples Glenn Olson · 5.2K views
  57. 57 2:35 L3–How to Count the Number of Multiples Glenn Olson · 4.8K views
  58. 58 2:56 M1–Exploring the Sum of the First n Natural Numbers Glenn Olson · 5.1K views
  59. 59 1:56 M2–Apply Sum of First n Natural Numbers Formula Glenn Olson · 4.9K views
  60. 60 2:21 M3–Advanced Problem with Sum of Natural Numbers Glenn Olson · 4.8K views
  61. 61 5:11 N1–Introduction to Linear Diophantine Equations Glenn Olson · 44.4K views
  62. 62 8:48 N2–Solve Basic Linear Diophantine Equation Glenn Olson · 59.8K views
  63. 63 7:57 N3–Simplify and Solve Linear Diophantine Equation Glenn Olson · 27.3K views
  64. 64 6:46 N4–Solve Linear Diophantine Equation with Right Hand Side Not Equal to 1 Glenn Olson · 21.6K views
  65. 65 5:53 O1–Introduction to Modular Arithmetic Glenn Olson · 44.5K views
  66. 66 5:32 O2 Congruences in Modular Arithmetic Updated Glenn Olson · 21.6K views
  67. 67 3:04 O3–Integers in Modular Arithmetic and “Modding Out” Glenn Olson · 18.3K views
  68. 68 2:00 O4–Congruence Properties Glenn Olson · 16.3K views
  69. 69 4:34 O5–Addition and Subtraction in Modular Arithmetic Glenn Olson · 29.5K views
  70. 70 5:18 O6–Multiplying and Exponents in Modular Arithmetic Glenn Olson · 17.7K views
  71. 71 4:54 O7–Multiplying and Exponents in Modular Arithmetic Glenn Olson · 12.3K views
  72. 72 3:25 O8–Division in Modular Arithmetic Glenn Olson · 39.5K views
  73. 73 3:38 O9–Division in Modular Arithmetic Glenn Olson · 21K views
  74. 74 4:36 O10–Solving Systems of Linear Congruences Glenn Olson · 41.4K views
  75. 75 2:41 O11–Modular Arithmetic Problems Glenn Olson · 13.2K views
  76. 76 4:51 O12–Modular Arithmetic Problems Glenn Olson · 10.4K views
  77. 77 2:57 P1–Gear Problem and LCM Glenn Olson · 6.4K views
  78. 78 2:12 P2–Number Sense Glenn Olson · 5.9K views
  79. 79 1:33 P3–Number Sense Glenn Olson · 5.1K views
  80. 80 2:23 P4–Number Sense Glenn Olson · 5K views
  81. 81 1:43 P5–Number Sense Glenn Olson · 6.5K views