Problems & Puzzles: Conjectures

13.- Sierpinski numbers

14.- Enoch Haga Observation about Palprimes

15.- The New Mersenne Conjecture

16.- n^n+1

17.- The Ludovicus conjecture about Euler trinomials

18.- Minimal primorial partitions (a conjecture by John Harvester)

19.  A bound to the largest prime factor of certain Carmichael numbers

20. The first N natural numbers listed in an order such that the sum of each two adjacent of them is a prime number, and the Rivera's Algorithm

22. A stronger version of the Goldbach Conjecture

23. The Shyam's conjecture about the Rare Numbers

26. The Calendar-like square Conjecture

27. A Charles Ashbacher Conjecture

28. Frank Buss's Conjecture

29. The Frank Buss's  B(n) function

30. The Firoozbakht Conjecture

34. n & n2, Triangular Numbers

35. The Firoozbakht functions

37. The Tutescu's Conjecture

38. Adrian Stoica’s Conjecture

40. Karama's Conjecture

41. Pe's Conjecture

44. A property of prime twins, only?

45. Even numbers as sum of 4 twin primes.

46. P-Q=R-S

54. Reversible primes conjeture

56. One  more SMR conjecture.

58. Primes m^2+1

67. primes & e

71. Twin primes and π.

72. Counting twin primes.

73. Counting primes by the last significant digit.

74. What is true assuming valid this...

75. Sebastian's formula for a special case of the Carmichael function.

76. Conjectures related to sequence (P[n])^(1/n)

77. Gaps between primes of the form p=qn+r

78. Pn^((Pn+1/Pn)^n)<=n^Pn

81.  For all primes p, there is at least one k | that p^k = p&y&p?

82.  Average of log Dn / log(logPn) equal R = 0,877 08...

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