Record history of the largest known CPAP-4
(with at least 1,000 digits)
Primes n's Digits Year Discoverer(s)
62399583639 • 9923# - 3399421607 + 30n 0..3 4285 2021 Serge Batalov
62753735335 • 7919# + 3399421577 + 30n 0..3 3404 2021 Serge Batalov
(1021328211729 • 2521# • (483 • 2521# + 1) + 11#) • (483 • 2521# - 1) / 7# + 1 + 6n 0..3 3207 2023 Ken Davis, APTreeSieve, NewPGen, OpenPFGW, Primo
121152729080 • 7019# / 1729 + 1 + 6n 0..3 3025 2019 Gerd Lamprecht & Norman Luhn, PrimeForm, Primo
55072065656 • 7013# + 9843049 + 30n 0..3 3024 2018 Gerd Lamprecht, APSieve, PrimeForm, Primo
62037039993 • 7001# + 7811555723 + 30n 0..3 3021 2013 David Broadhurst, PrimeForm, Primo
50946848056 • 7001# + 7811555723 + 30n 0..3 3021 2013 David Broadhurst, PrimeForm, Primo
26997933312 • 7001# + 7811555663 + 30n 0..3 3020 2013 David Broadhurst, PrimeForm, Primo
25506692100 • 7001# + 7811555693 + 30n 0..3 3020 2013 David Broadhurst, PrimeForm, Primo
198267970563 • 6007# + 7811555663 + 30n 0..3 2575 2013 David Broadhurst, PrimeForm, Primo
153104252515 • 6007# + 7811555663 + 30n 0..3 2575 2013 David Broadhurst, PrimeForm, Primo
60213811936 • 6007# + 7811555693 + 30n 0..3 2574 2013 David Broadhurst, PrimeForm, Primo
24576954772 • 6007# + 7811555723 + 30n 0..3 2574 2013 David Broadhurst, PrimeForm, Primo
2738129459017 • 4211# + 3399421517 + 30n 1..4 1805 2022 Serge Batalov
2738129459017 • 4211# + 3399421517 + 30n 0..3 1805 2022 Serge Batalov
652229318541 • 3527# + 3399421517 + 30n 1..4 1504 2021 Serge Batalov
652229318541 • 3527# + 3399421517 + 30n 0..3 1504 2021 Serge Batalov
2746496109133 • 3001# + 26891 + 30n 1..4 1290 2018 Norman Luhn, Gerd Lamprecht, APSieve, PrimeForm, Primo
2746496109133 • 3001# + 26891 + 30n 0..3 1290 2018 Norman Luhn, Gerd Lamprecht, APSieve, PrimeForm, Primo
406463527990 • 2801# + 1633050283 + 30n 1..4 1209 2013 David Broadhurst, PrimeForm, Primo
406463527990 • 2801# + 1633050283 + 30n 0..3 1209 2013 David Broadhurst, PrimeForm, Primo
4480408177865 • 2539# + 3399421517 + 30n 1..4 1084 2021 Serge Batalov
4480408177865 • 2539# + 3399421517 + 30n 0..3 1084 2021 Serge Batalov
993530619517 • 2503# + 1633050253 + 30n 1..4 1073 2013 David Broadhurst, PrimeForm, Primo
993530619517 • 2503# + 1633050253 + 30n 0..3 1073 2013 David Broadhurst, PrimeForm, Primo
495690450643 • 2503# + 1633050283 + 30n 1..4 1072 2013 David Broadhurst, PrimeForm, Primo
495690450643 • 2503# + 1633050283 + 30n 0..3 1072 2013 David Broadhurst, PrimeForm, Primo
150822742857 • 2503# + 1633050253 + 30n 1..4 1072 2013 David Broadhurst, PrimeForm, Primo
150822742857 • 2503# + 1633050253 + 30n 0..3 1072 2013 David Broadhurst, PrimeForm, Primo
94807777362 • 2503# + 1633050253 + 30n 1..4 1072 2013 David Broadhurst, PrimeForm, Primo
94807777362 • 2503# + 1633050253 + 30n 0..3 1072 2013 David Broadhurst, PrimeForm, Primo
142661157626 • 2411# + 71427757 + 30n 1..4 1038 2002 Jim Fougeron, Primo
142661157626 • 2411# + 71427757 + 30n 0..3 10382002 Jim Fougeron, Primo
533098369554 • 2357# + 3399421517 + 30n 2..6 1012
2021 Serge Batalov
533098369554 • 2357# + 3399421517 + 30n 1..5 1012
2021 Serge Batalov
533098369554 • 2357# + 3399421517 + 30n 0..4 1012
2021 Serge Batalov