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 2022-07-09, 20:28 #23 MattcAnderson     "Matthew Anderson" Dec 2010 Oregon, USA 23·149 Posts welcome in new person
 2022-07-09, 20:33 #24 MattcAnderson     "Matthew Anderson" Dec 2010 Oregon, USA 119210 Posts Have a nice day
 2022-07-09, 20:33 #25 paulunderwood     Sep 2002 Database er0rr 23·3·11·17 Posts Do it again and you will be put in the sin bin for a while.
 2022-07-10, 00:25 #26 MattcAnderson     "Matthew Anderson" Dec 2010 Oregon, USA 4A816 Posts All possible Have a nice day In my world, conjecture is like probably true
 2022-07-10, 00:58 #27 MattcAnderson     "Matthew Anderson" Dec 2010 Oregon, USA 23·149 Posts Sounds good smile Last fiddled with by MattcAnderson on 2022-07-10 at 01:34
 2022-07-10, 02:49 #28 MattcAnderson     "Matthew Anderson" Dec 2010 Oregon, USA 23·149 Posts appreciate your efforts
 2022-11-17, 15:20 #29 MattcAnderson     "Matthew Anderson" Dec 2010 Oregon, USA 100101010002 Posts Primes as not a possible numerical anagram ... interesting Here is some simple minded Maple code. The hardest part was counting all the 2s. > for a from 2 by 2 to 100 do if isprime(222222222222222219+a) then print(222222222222222219+a, "is prime") end if end do; 222222222222222221, "is prime" 222222222222222281, "is prime" A pair of p18. (18 digit prime numbers) Have a nice day. I put another code snippet at my web-page - mattanderson.fun Try to find under "more files" 'prime but not anagram.txt' okay, after some manual searching, I found a not-anagram cosisting of 63 twos and one 7. > for a from 2 by 2 to 100 do if isprime(2222222222222222222222222222222222222222222222222222222222222219+a) then print(2222222222222222222222222222222222222222222222222222222222222219+a, "is prime") end if end do; 2222222222222222222222222222222222222222222222222222222222222227, "is prime" 2222222222222222222222222222222222222222222222222222222222222287, "is prime" > evalf(log10(2222222222222222222222222222222222222222222222222222222222222219+a)); 63.34678751 > # so we are looking at a pair of 64 digit prime numbers. - maybe an original calculation (?World record?) > > Anyone else can find bigger not-anagram primes using a similar technique. > for a from 2 by 2 to 1000 do if isprime(22222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222219+a) then print(22222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222219+a, "is prime") end if end do; 22222222222222222222222222222222222222222222222222222222222222222222222222222\ 222222222222222223, "is prime" > evalf(log10(22222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222223)); 94.34678747 > # a 95 digit number > > It is clear to me that anyone with the right software, and a little effort, one can find bigger than a 95 digit , not an anagram prime number. Maple is a fine tool. Have a nice day. Wishing you all the best. Last fiddled with by MattcAnderson on 2022-11-17 at 16:09 Reason: point to mattanderson.fun
2022-11-17, 21:19   #30
Batalov

"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

100111010010012 Posts

Quote:
 Originally Posted by MattcAnderson Primes as not a possible numerical anagram ... interesting 222222222222222221, "is prime" 222222222222222281, "is prime" A pair of p18. (18 digit prime numbers) ...etc...
Every input is valuable. But all of what you wrote are not anagrams.

 2022-11-17, 21:40 #31 MattcAnderson     "Matthew Anderson" Dec 2010 Oregon, USA 23×149 Posts I found a thing Since I have a handy dandy tool that can deal with large integers (Maple Software) I have found a 121 digit prime. > temp := 2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222221; tem2 := 2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222227; if isprime(temp) then print(temp, " is prime") end if; if isprime(tem2) then print(tem2, "is prime") end if; 22222222222222222222222222222222222222222222222222222222222222222222222222222\ 22222222222222222222222222222222222222222221, " is prime" > evalf(log10(temp)); 120.3467875 > # so we have found a 121 digit prime number such that any permutation of its digits yields a composite number. # good fun :--) # Matt And to be sure, an anagram deals with the English language. This is a fast and loose post. Cheers !!!
2022-11-17, 23:50   #32
chalsall
If I May

"Chris Halsall"
Sep 2002

1107410 Posts

Quote:
 Originally Posted by MattcAnderson This is a fast and loose post.
So is this.

Imagine a young child with a C64, and a subscription to Scientific American.

While that child worked at a sawmill to pay for his later education.

And coded... Day in. Day out...

And, stayed away many nights wondering if there really was a dog...

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