Squareful

writer : Sloane, N. J. A.

source : Sequences A013929, A045882, A046027, and A046028 in "The On-Line Encyclopedia of Integer Sequences."

page : ...

29-12-2020 2129

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Pentagonal Number

writer : Guy, R. K.

source : "Every Number Is Expressible as the Sum of How Many Polygonal Numbers?." Amer. Math. Monthly 101

page : ...

20-12-2020 1556

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Woodall Number

writer : Ribenboim, P

source : The New Book of Prime Number Records. New York: Springer-Verlag

page : ...

15-12-2020 1406

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Sarnak,s Constant

writer : Niklasch, G.

source : "Some Number-Theoretical Constants." http://www.gn-50uma.de/alula/essays/Moree/Moree.en.shtml

page : ...

21-3-2020 1562

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Power Fractional Parts

writer : Bennett, M. A.

source : "Fractional Parts of Powers of Rational Numbers." Math. Proc. Cambridge Philos. Soc. 114

page : ...

21-10-2020 3004

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Star Number

writer : Conway, J. H. and Guy, R. K

source : The Book of Numbers. New York: Springer-Verlag

page : ...

22-12-2020 1303

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Euler Transform

writer : Abramowitz, M. and Stegun, I. A.

source : Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover

page : ...

27-10-2020 3595

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Squarefree Factorization

writer : Gathen, J. von zur and Gerhard,

source : Modern Computer Algebra. Cambridge, England: Cambridge University Press

page : ...

16-9-2020 1244

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Hexadecimal

writer : Gardner, M

source : The Sixth Book of Mathematical Games from Scientific American. Chicago, IL: University of Chicago Press

page : p. 105

27-11-2019 1388

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Bertrand,s Postulate

writer : Aigner, M. and Ziegler, G. M

source : Proofs from the Book, 2nd ed. New York: Springer-Verlag, 2000.

page : ...

30-9-2020 3131

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Casting Out Nines

writer : Conway, J. H. and Guy, R. K.

source : The Book of Numbers. New York: Springer-Verlag

page : ...

19-10-2019 1461

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Lagrange,s Four-Square Theorem

writer : Hardy, G. H.

source : Ramanujan: Twelve Lectures on Subjects Suggested by His Life and Work, 3rd ed. New York: Chelsea, 1999.

page : ...

27-12-2020 1694

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Cuban Prime

writer : Cunningham, A. J. C.

source : "On Quasi-Mersennian Numbers." Mess. Math. 41

page : ...

6-10-2020 1116

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Gregory Series

writer : Borwein, J. and Bailey, D.

source : "A Curious Anomaly in the Gregory Series." §2.2 in Mathematics by Experiment: Plausible Reasoning in the 21st Century. Wellesley, MA: A K Peters

page : ...

8-3-2020 1642

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Fractional Part

writer : Finch, S. R

source : "Powers of 3/2 Modulo One." §2.30.1 in Mathematical Constants. Cambridge, England: Cambridge University Press

page : ...

20-8-2020 1826

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Vojta,s Conjecture

writer : Cox, D. A.

source : "Introduction to Fermat,s Last Theorem." Amer. Math. Monthly 101

page : ...

12-7-2020 1699

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Fortunate Prime

writer : Gardner, M

source : "Patterns in Primes are a Clue to the Strong Law of Small Numbers." Sci. Amer. 243

page : ...

23-9-2020 1221

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Divisor

writer : Dickson, L. E.

source : History of the Theory of Numbers, Vol. 1: Divisibility and Primality. New York: Dover, 2005.

page : ...

26-6-2020 2750

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