 mersenneforum.org generalized minimal (probable) primes
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sweety439

"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36

57608 Posts Done for all bases <=50

Bases 43, 47, 49 are not listed as they have some unsolved families x{y}z with |x|>=7 or |z|>=7, thus my excel program cannot handle (will give error a or c value for (a*b^n+c)/d)
Attached Files unsolved.zip (19.5 KB, 52 views)   2021-08-06, 03:43 #134 sweety439   "99(4^34019)99 palind" Nov 2016 (P^81993)SZ base 36 24·191 Posts (Probable) primes found for base 31: Code: E8(U^21866)P = 443*31^21867-6 IE(L^29787) = (5727*31^29787-7)/10 L(F^21052)G = (43*31^21053+1)/2 MI(O^10747)L = (3504*31^10748-19)/5 PEO(0^22367)Q = 24483*31^22368+26 (R^22137)1R = (9*31^22139-8069)/10 Unsolved families searched to high depth with no (probable) prime found: Code: ILE(L^n) = (179637*31^n-7)/10 at n=30000 (now unneeded since IE(L^29787) is (probable) prime) L0(F^n)G = (1303*31^(n+1)+1)/2 at n=23000 (now unneeded since L(F^21052)G is (probable) prime) M(P^n) = (137*31^n-5)/6 at n=39000 P(F^n)G = (51*31^(n+1)+1)/2 at n=32000 (R^n)1 = (9*31^(n+1)-269)/10 at n=20000 (R^n)8 = (9*31^(n+1)-199)/10 at n=19000 (U^n)P8K = 31^(n+3)-5498 at n=27000   2021-09-28, 07:04 #135 sweety439   "99(4^34019)99 palind" Nov 2016 (P^81993)SZ base 36 24·191 Posts Newest status for the unsolved families in base 31: (probable) primes found: Code: E8{U}P: prime at length 21869 (the prime is 443*31^21867-6) IE{L}: prime at length 29789 (the prime is (5727*31^29787-7)/10) L{F}G: prime at length 21054 (the prime is (43*31^21053+1)/2) MI{O}L: prime at length 10750 (the prime is (3504*31^10748-19)/5) PEO{0}Q: prime at length 22371 (the prime is 24483*31^22368+26) {L}9G: prime at length 10014 (the prime is (6727*31^10012-3777)/10) {R}1R: prime at length 22139 (the prime is (9*31^22139-8069)/10) unneeded families: Code: ILE{L} (tested to length 30000, but IE{L} has prime at length 29789) L0{F}G (tested to length 23000, but L{F}G has prime at length 21054) {L}9IG (tested to length 13000, but {L}9G has prime at length 10014) unsolved families: Code: M{P} (at length 39000) (the formula is (137*31^n-5)/6) P{F}G (at length 32000) (the formula is (1581*31^n+1)/2) SP{0}K (at length 28000) (the formula is 27683*31^n+20) {F}G (at length 4194303) (the formula is (31*31^n+1)/2) {F}KO (the formula is (961*31^n+327)/2) {F}RA (the formula is (961*31^n+733)/2) {L}CE (at length 21000) (the formula is (6727*31^n-2867)/10) {L}G (at length 30000) (the formula is (217*31^n-57)/10) {L}IS (at length 25000) (the formula is (6727*31^n-867)/10) {L}SO (at length 22000) (the formula is (6727*31^n+2193)/10) {P}I (at length 32000) (the formula is (155*31^n-47)/6) {R}1 (at length 27000) (the formula is (279*31^n-269)/10) {R}8 (at length 33000) (the formula is (8649*31^n-8069)/10) {U}P8K (at length 30000) (the formula is 29791*31^n-5498)   Thread Tools Show Printable Version Email this Page Similar Threads Thread Thread Starter Forum Replies Last Post Bob Underwood Math 12 2020-10-11 20:01 philmoore Five or Bust - The Dual Sierpinski Problem 388 2019-03-01 04:30 carpetpool Information & Answers 9 2018-02-24 21:41 Unregistered Homework Help 6 2012-10-31 14:16 Cyclamen Persicum Math 1 2004-01-30 15:11

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