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Revision History for A242741

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A242741

Primes p such that p^2 divides 15^(p-1) - 1.
(history; published version)

#17 by N. J. A. Sloane at Fri May 17 14:43:07 EDT 2019

STATUS

proposed

approved

#16 by Robert Price at Fri May 17 13:07:47 EDT 2019

STATUS

editing

proposed

#15 by Robert Price at Fri May 17 13:07:44 EDT 2019

MATHEMATICA

Select[Prime[Range[1000000]], PowerMod[15, # - 1, #^2] == 1 &] (* _Robert Price_, May 17 2019 *)

PowerMod[15, # - 1, #^2] == 1 &] (* Robert Price, May 17 2019 *)

STATUS

proposed

editing

#14 by Robert Price at Fri May 17 13:03:03 EDT 2019

STATUS

editing

proposed

Discussion

Fri May 17

13:05

Michel Marcus: a single line ?

#13 by Robert Price at Fri May 17 13:02:59 EDT 2019

MATHEMATICA

Select[Prime[Range[1000000]],

PowerMod[15, # - 1, #^2] == 1 &] (* Robert Price, May 17 2019 *)

STATUS

approved

editing

#12 by Michel Marcus at Sat Apr 27 05:42:15 EDT 2019

STATUS

editing

approved

#11 by Michel Marcus at Sat Apr 27 05:42:13 EDT 2019

LINKS

Amir Akbary and Sahar Siavashi, <a href="http://math.colgate.edu/~integers/s3/s3.Abstract.html">The Largest Known Wieferich Numbers</a>, INTEGERS, 18(200182018), A3. See Table 1 p. 5.

STATUS

approved

editing

#10 by Susanna Cuyler at Thu Apr 25 13:29:35 EDT 2019

STATUS

proposed

approved

#9 by Michel Marcus at Thu Apr 25 10:43:04 EDT 2019

STATUS

editing

proposed

#8 by Michel Marcus at Thu Apr 25 10:43:02 EDT 2019

LINKS

Amir Akbary and Sahar Siavashi, <a href="http://math.colgate.edu/~integers/s3/s3.Abstract.html">The Largest Known Wieferich Numbers</a>, INTEGERS, 18(20018), A3. See Table 1 p. 5.

STATUS

approved

editing