Forum: Soap Box
2022-05-26, 11:44
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Replies: 924
Views: 86,472
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Forum: Soap Box
2022-05-25, 23:58
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Replies: 924
Views: 86,472
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Forum: Soap Box
2022-05-25, 23:34
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Replies: 924
Views: 86,472
In this recent post...
In this recent post (https://www.mersenneforum.org/showpost.php?p=605235&postcount=126) I quoted from Martin Luther King Jr.'s Letter From the Birmingham Jail. That quotation comes to mind again.
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Forum: Lounge
2022-05-25, 13:50
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Replies: 372
Views: 44,959
On Thursday, May 25, 1961, President John F....
On Thursday, May 25, 1961, President John F. Kennedy made a speech before the House of Representatives. Most of it was about the Cold War. However, there was one bit near the end that became better...
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Forum: Soap Box
2022-05-25, 02:46
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Replies: 924
Views: 86,472
Gunman at a Texas elementary school kills 19...
Gunman at a Texas elementary school kills 19 students and two adults before being fatally shot, officials say (https://www.cnn.com/2022/05/24/us/uvalde-texas-elementary-school-shooting/index.html)If...
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Forum: Lone Mersenne Hunters
2022-05-25, 02:20
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Replies: 2,143
Views: 314,696
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Forum: Soap Box
2022-05-24, 02:59
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Replies: 8
Views: 151
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Forum: Soap Box
2022-05-23, 23:25
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Replies: 8
Views: 151
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Forum: Soap Box
2022-05-23, 16:58
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Replies: 187
Views: 42,817
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Forum: Lounge
2022-05-23, 12:34
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Replies: 38
Views: 3,058
Cosmos caudatus? Never heard of it. <google...
Cosmos caudatus? Never heard of it. <google google>
Hmm. I may have had one - and purely by chance - last year. I had Diablo, Bright Lights, Picotee and Sensation Cosmos. But there was this...
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Forum: Lounge
2022-05-22, 13:51
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Replies: 38
Views: 3,058
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Forum: sweety439
2022-05-22, 02:57
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Replies: 417
Views: 33,614
Assuming that n = X1X1 is a positive integer...
Assuming that n = X1X1 is a positive integer congruent to 1 (mod 12), then
12^{\varphi(n)}\;-\;1
is a base twelve palindromic number divisible by n. It may not be the smallest such.
Nil...
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Forum: Lounge
2022-05-21, 16:40
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Replies: 1,178
Views: 116,496
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Forum: Miscellaneous Math
2022-05-21, 13:58
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Replies: 8
Views: 527
No. The number of k-digit blocks of decimal...
No. The number of k-digit blocks of decimal digits is 10^k. The number of k-digit endings of 2^n, n ≥ k, is 4*5^(k-1). (4*5^(k-1))/10^k is a tiny, tiny fraction if k is at all large. For k = 40,...
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Forum: Lounge
2022-05-21, 03:02
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Replies: 1,178
Views: 116,496
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Forum: Number Theory Discussion Group
2022-05-20, 00:54
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Replies: 14
Views: 946
Drop the exclusion of primes. Say...
Drop the exclusion of primes. Say "representations" rather than "compositions". The meaning of "different" may be different from what you think it is.Happy googling!
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Forum: Lounge
2022-05-20, 00:43
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Replies: 1,178
Views: 116,496
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Forum: Soap Box
2022-05-19, 00:54
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Replies: 107
Views: 12,688
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Forum: Lounge
2022-05-18, 13:26
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Replies: 1,691
Views: 194,147
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Forum: Soap Box
2022-05-18, 12:02
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Replies: 924
Views: 86,472
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Forum: Lounge
2022-05-18, 11:25
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Replies: 1,691
Views: 194,147
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Forum: Miscellaneous Math
2022-05-18, 02:31
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Replies: 8
Views: 527
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Forum: Lounge
2022-05-17, 14:26
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Replies: 1,691
Views: 194,147
COVID has killed a million people here in the...
COVID has killed a million people here in the good ol' USA (official cause of death as listed on death certificates).
How many may have died of other things, with COVID as a contributing factor,...
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Forum: Soap Box
2022-05-17, 13:12
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Replies: 924
Views: 86,472
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Forum: Soap Box
2022-05-15, 12:46
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Replies: 924
Views: 86,472
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