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Thread / Thread Starter	Last Post	Replies	Views
Proper factorization known, no prime factors known Dr Sardonicus	2021-09-27 16:56 by Dr Sardonicus	2	91
September 2021 ( 1 2) Xyzzy	2021-09-22 10:03 by Kebbaj	14	2,071
Farmer Fred's funky field ( 1 2 3 4 5 ... Last Page) MattcAnderson	2021-09-06 23:58 by PhilF	58	1,679
August 2021 tgan	2021-09-06 11:24 by uau	3	601
Coset conundrum Dr Sardonicus	2021-08-29 13:26 by Dr Sardonicus	2	233
Primes in π ( 1 2 3 4 5 ... Last Page) davar55	2021-08-21 12:19 by LaurV	218	57,692
July 2021 Xyzzy	2021-08-12 15:03 by Dr Sardonicus	8	1,574
Exercise for 'Daryll's' age ( 1 2) MattcAnderson	2021-08-09 12:58 by SmartMersenne	13	846
hand puzzles MattcAnderson	2021-08-07 17:19 by MattcAnderson	8	1,210
June 2021 ( 1 2 3 4) Xyzzy	2021-07-12 12:34 by Dr Sardonicus	35	3,581
Matching problem ( 1 2) henryzz	2021-06-06 05:55 by Citrix	20	3,165
The Puzzling Power of Simple Arithmetic Xyzzy	2021-06-02 00:09 by Xyzzy	1	469
May 2021 ( 1 2) tgan	2021-05-15 20:14 by Kebbaj	17	3,073
April 2021 ( 1 2 3) Xyzzy	2021-05-04 22:37 by uau	25	3,149
Classic problem: Four 4's ( 1 2 3 4 5 ... Last Page) Ken_g6	2021-05-04 15:40 by petrw1	106	13,340
Doubling your average speed? retina	2021-04-11 13:00 by xilman	5	507
Crosswords ( 1 2 3) Bobby Jacobs	2021-03-27 19:00 by Bobby Jacobs	27	4,094
online "IQ test" questions ( 1 2) Mini-Geek	2021-03-12 16:56 by Almira	18	25,159
March 2021 tgan	2021-02-28 13:30 by tgan	0	923
January 2021 ( 1 2 3 4) tgan	2021-02-09 21:29 by Zoozie	36	5,970
February 2021 ( 1 2) Xyzzy	2021-02-04 14:53 by Kebbaj	11	1,962
Project Euler ( 1 2 3) jhs	2021-01-19 04:05 by LaurV	32	8,129
Resistors ( 1 2) LaurV	2021-01-15 00:05 by jwaltos	13	2,106
This one isn't in the OEIS R2357	2021-01-12 23:14 by TrojH	1	1,258
December 2020 ( 1 2) tgan	2021-01-10 15:35 by uau	21	3,776

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