Proth primes of the form 22249•2ⁿ+1

Current data

2, 408602^[1]

Remarks :

2020-04-10: Checked n = 250000 - 408602, Lleyton Joseph
2020-04-10: 408602 confirmed, Lleyton Joseph, PrimeGrid New Sierpiński Problem
2020-04-10: Reserved by Lleyton Joseph for n = 250000 - 500000
2020-04-08: Checked n = 160000 - 170000, Ravi Fernando, double-check
2020-04-08: Checked n = 137100 - 150000, Jeppe Stig Nielsen, double-check
2020-04-08: Checked n = 150000 - 160000, Ravi Fernando, double-check
2020-04-08: Checked n = 132900 - 137100, Jeppe Stig Nielsen, double-check
2020-04-08: Checked n = 129700 - 132900, Jeppe Stig Nielsen, double-check
2020-04-08: Checked n = 100000 - 129700, Jeppe Stig Nielsen, double-check
2020-04-07: Checked n = 1 - 100000, Jeppe Stig Nielsen, double-check
2020-04-07: Checked n = 100000 - 250000, Lleyton Joseph
2020-04-07: Checked n = 1 - 100000, Lleyton Joseph
2010-09-29: Checked n = 400000 - 408602, Gary Barnes
2010-09-29: Found n = 408602, Gary Barnes, CRUS Even Sierpiński
2010-09-24: Checked n = 250000 - 400000, Gary Barnes
2010-08-02: Checked n = 120000 - 250000, Gary Barnes
2010-07-16: Checked n = 100000 - 120000, Gary Barnes
2010-07-16: Checked n = 1 - 100000, Gary Barnes
2010-07-16: Reserved by Gary Barnes to n = 1000000