Kynea Primes
Term: (2n + 1)2 − 2 where n ≥ 1
Total: 51
Exhaustive-search-table, see b = 2
References: PrimePages • NPLB
# Number Digits When Who PrimePages − ID
51 (2852770 + 1)2 − 2 513419 Jul 2019 Ryan Propper; cksieve; OpenPFGW 126646
50 (2661478 + 1)2 − 2 398250 Jun 2016 Mark Rodenkirch; cksieve; OpenPFGW 121801
49 (2621443 + 1)2 − 2 374146 May 2016 Mark Rodenkirch; cksieve; OpenPFGW
48 (2442052 + 1)2 − 2 266142 Feb 2016 Mark Rodenkirch; cksieve; OpenPFGW
47 (2376050 + 1)2 − 2 226405 2016 Mark Rodenkirch; cksieve; OpenPFGW
46 (2369581 + 1)2 − 2 222510 2016 Mark Rodenkirch; cksieve; OpenPFGW
45 (2281621 + 1)2 − 2 169553 Oct 2005 Cletus Emmanuel; OpenPFGW 75878
44 (2110615 + 1)2 − 2 66597 Feb 2004 Predrag Minovic; MultiSieve/mtsieve; OpenPFGW 68900
43 (2108888 + 1)2 − 2 65558 Feb 2004 Predrag Minovic; MultiSieve/mtsieve; OpenPFGW 68958
42 (2106380 + 1)2 − 2 64048 Mar 2004 Predrag Minovic; MultiSieve/mtsieve; OpenPFGW 69438
41 (2102435 + 1)2 − 2 61673 Feb 2004 Predrag Minovic; MultiSieve/mtsieve; OpenPFGW 68943
40 (269312 + 1)2 − 2 41730 2002 Steven Harvey
39 (245873 + 1)2 − 2 27619 2002 Steven Harvey
38 (237035 + 1)2 − 2 22298 2002 Steven Harvey
37 (210367 + 1)2 − 2 6242 Feb 2002 Cletus Emmanuel
36 (210088 + 1)2 − 2 6074
35 (26365 + 1)2 − 2 3833
34 (26287 + 1)2 − 2 3786
33 (25153 + 1)2 − 2 3103
32 (24217 + 1)2 − 2 2539 Feb 2002 Cletus Emmanuel
31 (23281 + 1)2 − 2 1976 Feb 2002 Cletus Emmanuel
30 (22813 + 1)2 − 2 1694 Feb 2002 Cletus Emmanuel
29 (21650 + 1)2 − 2 994
28 (21070 + 1)2 − 2 645
27 (2800 + 1)2 − 2 482
26 (2680 + 1)2 − 2 410
25 (2591 + 1)2 − 2 356
24 (2555 + 1)2 − 2 335
23 (2507 + 1)2 − 2 306
22 (2501 + 1)2 − 2 302
21 (2491 + 1)2 − 2 296
20 (2467 + 1)2 − 2 282
19 (2242 + 1)2 − 2 146
18 (2180 + 1)2 − 2 109
17 (287 + 1)2 − 2 53
16 (265 + 1)2 − 2 40
15 (251 + 1)2 − 2 31
14 (232 + 1)2 − 2 20
13 (227 + 1)2 − 2 17
12 (223 + 1)2 − 2 14
11 (221 + 1)2 − 2 13
10 (218 + 1)2 − 2 11
9 (217 + 1)2 − 2 11
8 (215 + 1)2 − 2 10
7 (212 + 1)2 − 2 8
6 (29 + 1)2 − 2 6
5 (28 + 1)2 − 2 5
4 (25 + 1)2 − 2 4
3 (23 + 1)2 − 2 2
2 (22 + 1)2 − 2 2
1 (21 + 1)2 − 2 1