- 1. Which number is used to represent infinity in Japanese mythology?
A) 9,999,999
B) 8,888,888
C) 9,000,000
D) 8,000,000
- 2. How many prime knots with 17 crossings are there?
A) 8,399,329
B) 8,053,393
C) 8,388,607
D) 8,108,731
- 3. Which number is a repunit prime in base 14?
A) 8,108,731
B) 8,675,309
C) 8,888,888
D) 9,999,999
- 4. What is the second composite Mersenne number with a prime exponent?
A) 8,436,379
B) 8,389,137
C) 8,388,608
D) 8,388,607
- 5. Which of these is a Markov number?
A) 8,389,137
B) 8,399,329
C) 8,436,379
D) 8,053,393
- 6. Which number is a Wedderburn-Etherington number?
A) 8,436,379
B) 8,675,309
C) 8,503,056
D) 8,399,329
- 7. Which number is associated with a Tommy Tutone hit song?
A) 8,888,888
B) 8,675,311
C) 8,946,176
D) 8,675,309
- 8. How many nonnegative integers have distinct decimal digits?
A) 9,699,690
B) 8,964,800
C) 8,675,309
D) 8,877,691
- 9. Which number is a self-descriptive number in base 8?
A) 8,946,176
B) 8,888,888
C) 9,694,845
D) 8,436,379
- 10. What number is the first strong pseudoprime to have a multiplicative order above 100,000?
A) 9,694,845
B) 9,647,009
C) 9,069,229
D) 9,369,319
- 11. Which number is a Newman–Shanks–Williams prime?
A) 9,069,229
B) 9,369,319
C) 9,647,009
D) 9,999,991
- 12. What is the eighth primorial?
A) 9,261,000
B) 9,699,690
C) 9,938,375
D) 9,694,845
- 13. What is the largest 7-digit cube?
A) 9,150,625
B) 9,834,496
C) 9,765,625
D) 9,938,375
- 14. What is the largest 7-digit prime number?
A) 9,699,690
B) 9,069,229
C) 9,997,156
D) 9,999,991
- 15. What is the largest prime number smaller than 1,000,000?
A) 999,999
B) 1,000,000
C) 999,991
D) 999,983
- 16. How many primes are there between 1,000,000 and 2,000,000?
A) 62,090
B) 67,883
C) 70,435
D) 62,712
- 17. What is the total number of prime numbers between 1,000,000 and 10,000,000?
A) 78,498
B) 500,000
C) 586,081
D) 600,000
- 18. How many primes are there between 9,000,000 and 10,000,000?
A) 70,435
B) 64,336
C) 63,129
D) 62,090
- 19. Which number is the largest 7-digit square?
A) 9,150,625
B) 9,998,244
C) 9,834,496
D) 9,653,449
- 20. Which number is the sixth term of Sylvester's sequence?
A) 3,111,696
B) 4,444,444
C) 3,333,333
D) 3,263,443
- 21. What is 10! equal to?
A) 3,301,819
B) 4,194,304
C) 3,524,578
D) 3,628,800
- 22. Which number is a Markov prime?
A) 6,625,109
B) 4,400,489
C) 3,626,149
D) 3,276,509
- 23. How many free 15-ominoes are there?
A) 5,049,816
B) 3,554,688
C) 3,426,576
D) 5,623,756
- 24. Which number is the 12th colossally abundant number?
A) 4,194,304
B) 4,213,597
C) 4,324,320
D) 4,805,595
- 25. Which of these is a Bell number?
A) 4,213,597
B) 4,260,282
C) 4,805,595
D) 6,536,382
- 26. Which number is the Fine number?
A) 4,324,320
B) 4,260,282
C) 4,213,597
D) 4,805,595
- 27. What is the number of reduced trees with 31 nodes?
A) 4,260,282
B) 5,049,816
C) 6,536,382
D) 5,623,756
- 28. Which number is the Riordan number?
A) 4,805,595
B) 4,213,597
C) 6,536,382
D) 4,260,282
- 29. Which number is the Large Schröder number?
A) 4,805,595
B) 5,293,446
C) 6,536,382
D) 4,260,282
- 30. What is the number of primes under 100,000,000?
A) 3,626,149
B) 5,702,887
C) 5,761,455
D) 5,096,876
- 31. Which number is a Motzkin number?
A) 4,260,282
B) 4,805,595
C) 6,536,382
D) 5,293,446
- 32. Which number is the largest n-digit pandigital prime?
A) 3,626,149
B) 3,276,509
C) 6,625,109
D) 7,652,413
- 33. Which number is a Keith number?
A) 5,761,455
B) 7,652,413
C) 7,861,953
D) 7,913,837
- 34. What number of beads does a binary necklace have in the definition of 4,794,088?
A) 29
B) 22
C) 28
D) 15
- 35. Which of these is 2-automorphic?
A) 3,554,688
B) 7,109,376
C) 3,200,000
D) 4,444,444
- 36. Which number is the smallest n such that the sum of reciprocals of primes up to n exceeds 3?
A) 4,210,818
B) 5,195,977
C) 4,037,913
D) 5,096,876
- 37. Which of these is a Wedderburn–Etherington prime?
A) 6,625,109
B) 3,276,509
C) 3,626,149
D) 4,400,489
- 38. What is the sum of the first ten factorials?
A) 3,301,819
B) 4,037,913
C) 4,213,597
D) 4,782,969
- 39. What is the double factorial of 15?
A) 2,085,136
B) 2,012,674
C) 2,118,107
D) 2,027,025
- 40. Which number is the largest known Wolstenholme prime?
A) 2,097,593
B) 2,692,537
C) 2,124,679
D) 2,796,203
- 41. How many trees have 21 unlabelled nodes?
A) 2,515,169
B) 2,144,505
C) 2,567,284
D) 2,266,502
- 42. Which number is the 41st highly composite number and 2079th triangular number?
A) 2,162,160
B) 2,744,210
C) 2,222,222
D) 2,178,309
- 43. Which number represents the count of different ways to express 1,000,000,000 as the sum of two prime numbers?
A) 2,598,560
B) 2,274,205
C) 2,144,505
D) 2,405,236
- 44. Which number is known as a Motzkin number?
A) 2,313,441
B) 2,356,779
C) 2,674,440
D) 2,646,723
- 45. What is the chance of getting a royal flush in a hand of poker?
A) 2,485,534
B) 2,356,779
C) 2,405,236
D) 2,598,560
- 46. Which number is the little Schröder number?
A) 2,744,210
B) 2,646,723
C) 2,674,440
D) 2,356,779
- 47. Which number is a Leonardo prime?
A) 2,796,203
B) 2,692,537
C) 2,097,593
D) 2,922,509
- 48. Which number is a Pell number?
A) 2,178,309
B) 2,674,440
C) 2,744,210
D) 2,646,723
- 49. Which number is both a Wagstaff prime and a Jacobsthal prime?
A) 2,922,509
B) 2,796,203
C) 2,097,593
D) 2,692,537
- 50. What is another name for 2,985,984?
A) A Markov number
B) A repdigit
C) A great-great-gross
D) A Leyland number
- 51. Which number is a 1-automorphic number?
A) 2,560,000
B) 2,222,222
C) 2,890,625
D) 2,177,399
- 52. What is the largest known generalized Wieferich prime in base 3, excluding 11?
A) 1,006,301
B) 1,006,003
C) 1,000,003
D) 1,136,689
- 53. Which number is a repunit?
A) 1,000,001
B) 1,234,321
C) 1,111,111
D) 1,112,083
- 54. Which number is the 100,000th prime number?
A) 1,441,889
B) 1,000,003
C) 1,299,709
D) 1,686,049
- 55. What value equals 116 and was mentioned in Star Trek?
A) 1,002,001
B) 1,234,321
C) 1,030,301
D) 1,771,561
- 56. Which number is equal to the sum of the seventh power of its digits?
A) 1,953,125
B) 1,185,921
C) 1,594,323
D) 1,741,725
- 57. From which language is the word 'million' derived?
A) Greek
B) Latin
C) Italian
D) French
- 58. What is the SI prefix used for 1,000,000?
A) Mega
B) Milli
C) Kilo
D) Giga
- 59. 1,000,000 is the cube of what number?
A) 10
B) 50
C) 1,000
D) 100
- 60. Approximately how many pages of pulp paperback fiction contain one million characters?
A) 50
B) 1,000
C) 600
D) 136
- 61. How many days is a million seconds?
A) 24 days
B) 115 days
C) 1.15 days
D) 11.57 days
- 62. In Indian and Pakistani English, what is 1,000,000 expressed as?
A) 1 lakh
B) 100 lakh
C) 10 lakh
D) 1,000 lakh
- 63. The word 'million' is common to which two numbering systems?
A) Binary and Decimal
B) Metric and Imperial
C) Roman and Arabic
D) Short scale and long scale
- 64. Which abbreviation for 1,000,000 should not be confused with the Roman numeral 2,000?
A) m
B) MM
C) M
D) mio
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