1 735 831 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
447844399	9	28.7	old
69961794973054507511	20	65.9	2015-06-19 22:27:27
908109535537843799647	21	69.6	2020-06-15 02:43:17

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	9B8E83A5451634BB	2	0	1	3
Verified (Factored)	2017-11-03	ATH	9B8E83A5451634BB	2	775841	1	3
Verified	2020-06-15	M Miller	0F4B55E3058AC384	3	1721180	5	3
Verified	2020-06-15	nordi	0F4B55E3058AC384	3	1525273	5	3

P-1 factors

Date	Factor	B1	B2
2015-06-19	69961794973054507511	500000	15000000

History

Date	User	Type	Result
2020-06-15	nordi	C-PRP	M1735831/447844399/69961794973054507511/908109535537843799647 : 0F4B55E3058AC384 PRP: Verified PRP without proof (not generated)
2020-06-15	M Miller	C-PRP	M1735831/447844399/69961794973054507511/908109535537843799647 : 0F4B55E3058AC384 PRP: Verified PRP without proof (not generated)
2020-06-15	nordi	F-ECM	Factor: 908109535537843799647 / (ECM curve 2, B1=50000, B2=5000000, Sigma=5184360194500570)
2017-11-03	ATH	C-PRP	M1735831/447844399/69961794973054507511 : 9B8E83A5451634BB PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1735831/447844399/69961794973054507511 : 9B8E83A5451634BB PRP: Verified PRP without proof (not generated)
2015-06-19	alpertron	F-PM1	Factor: 69961794973054507511 / (P-1, B1=500000, B2=15000000, E=12)