807 473 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
95507906441	11	36.5	old
1550688913607	13	40.5	2008-07-16 09:26:58
12599056154187797504134180612525277681	38	123.2	2021-09-20 13:16:28

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	118 / 640

Estimated T-Level: 25.9 ⓘ

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)	2017-09-28	Oliver Kruse	7337903A95196207	2	0	1	3
Verified (Factored)	2017-10-13	Oliver Kruse	7337903A95196207	2	67541	1	3
Verified (Factored)	2017-12-18	ATH	7337903A95196207	2	272538	1	3
Verified (Factored)	2020-04-21	Oliver Kruse	4CD58043F18FD6F1	2	351046	5	3
Verified	2021-09-20	mikr	4CD58043F18FD6F1	3	283867	5	3
Verified	2021-09-20	Caleb B	4CD58043F18FD6F1	3	544314	5	3

P-1 factors

Date	Factor	B1	B2
2021-09-20	12599056154187797504134180612525277681	10000000	830000000

History

Date	User	Type	Result
2021-09-20	curtisc	CERT	PRP Certification Proof certified good
2021-09-20	Caleb B	C-PRP	M807473/95507906441/1550688913607/12599056154187797504134180612525277681 : 4CD58043F18FD6F1 PRP proof power = 6 PRP: Verified Proof certified good
2021-09-20	Grunthos37	CERT	PRP Certification Proof certified good
2021-09-20	mikr	C-PRP	M807473/95507906441/1550688913607/12599056154187797504134180612525277681 : 4CD58043F18FD6F1 PRP proof power = 6 PRP: Verified Proof certified good
2021-09-20	gLauss	NF-PP1	Start=2/7, B1=5000000, B2=365000000
2021-09-20	gLauss	F-PM1	Factor: 12599056154187797504134180612525277681 / (P-1, B1=10000000, B2=830000000)
2020-04-21	Oliver Kruse	C-PRP	M807473/95507906441/1550688913607 : 4CD58043F18FD6F1 PRP: Verified (Factored) PRP without proof (small exponent)
2017-12-18	ATH	C-PRP	M807473/95507906441/1550688913607 : 7337903A95196207 PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-13	Oliver Kruse	C-PRP	M807473/95507906441/1550688913607 : 7337903A95196207 PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-28	Oliver Kruse	C-PRP	M807473/95507906441/1550688913607 : 7337903A95196207 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=300000, B2=10000000, E=12
2008-07-16	J Feitsma	F	Factor: 1550688913607