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Revision History for A189571

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Showing entries 1-10 | older changes
A189571 Smallest of nine consecutive primes whose sum is a prime.
(history; published version)
#20 by Charles R Greathouse IV at Thu Sep 08 08:45:56 EDT 2022
PROG

(MAGMAMagma) [ NthPrime(n): n in [1..190] | IsPrime(&+[NthPrime(n+s): s in [0..8]]) ];

Discussion
Thu Sep 08 08:45
OEIS Server: https://oeis.org/edit/global/2944
#19 by Michel Marcus at Tue Mar 30 01:29:18 EDT 2021
STATUS

reviewed

approved

#18 by Joerg Arndt at Tue Mar 30 00:14:55 EDT 2021
STATUS

proposed

reviewed

#17 by Michael S. Branicky at Mon Mar 29 17:03:26 EDT 2021
STATUS

editing

proposed

#16 by Michael S. Branicky at Mon Mar 29 17:02:57 EDT 2021
DATA

3, 29, 31, 37, 47, 79, 83, 89, 107, 109, 127, 131, 139, 149, 157, 173, 179, 193, 197, 199, 211, 241, 277, 347, 359, 367, 373, 389, 397, 433, 449, 487, 491, 521, 577, 593, 619, 643, 659, 677, 743, 761, 829, 853, 953, 977, 1049, 1063, 1087, 1129, 1151, 1193

#15 by Michael S. Branicky at Mon Mar 29 17:02:09 EDT 2021
PROG

(Python)

from sympy import isprime, nextprime

def aupto(limit):

plst, alst = [3, 5, 7, 11, 13, 17, 19, 23, 29], []

while plst[0] <= limit:

if isprime(sum(plst)): alst.append(plst[0])

plst = plst[1:] + [nextprime(plst[-1])]

return alst

print(aupto(1200)) # Michael S. Branicky, Mar 29 2021

STATUS

approved

editing

#14 by Bruno Berselli at Mon Aug 26 10:19:59 EDT 2013
STATUS

editing

approved

#13 by Bruno Berselli at Mon Aug 26 10:19:10 EDT 2013
COMMENTS

First 7-tuple of consecutive primes belonging to the sequence: 118061, 118081, 118093, 118127, 118147, 118163, 118169. Twin primes in the sequence: 29, 31; 107, 109; 197, 199; 1427, 1429; 1607, 1609; 1721, 1723; 4019, 4021, etc. [Bruno Berselli, Aug 26 2013]

STATUS

approved

editing

#12 by Harvey P. Dale at Wed Jun 05 14:30:42 EDT 2013
STATUS

editing

approved

#11 by Harvey P. Dale at Wed Jun 05 14:30:39 EDT 2013
CROSSREFS

Cf. A073681, A152468, A180948, A180950, A226380.

EXTENSIONS

Additional cross reference from Harvey P. Dale, Jun 05 2013

STATUS

approved

editing

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Last modified September 12 12:46 EDT 2024. Contains 375851 sequences. (Running on oeis4.)