305 483 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
7942559	7	22.9	old
3879551250735679959161189868050447	34	111.6	2021-09-05 02:22:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	425 / 640

Estimated T-Level: 28.3 ⓘ

TF below 2^89 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-22	Oliver Kruse	D3E1FE9ED1FE0FFA	1	0	1	3
Verified (Factored)	2017-10-12	Oliver Kruse	D3E1FE9ED1FE0FFA	1	67082	1	3
Verified (Factored)	2017-12-11	ATH	D3E1FE9ED1FE0FFA	1	290653	1	3
Verified (Factored)	2020-04-18	Oliver Kruse	53C19636E4327BB3	1	31322	5	3
Verified	2021-09-05	mikr	53C19636E4327BB3	2	92218	5	3
Verified	2021-09-05	H Michaelson	53C19636E4327BB3	2	119177	5	3

History

Date	User	Type	Result
2024-02-23	Denial140	NF-PM1	B1=10000000, B2=206662045590
2024-02-22	Denial140	NF-PM1	B1=10000000
2023-03-17	Denial140	NF-PM1	B1=1000000, B2=65871826020
2022-02-06	Lisander Viaene	NF-PM1	B1=50000
2021-09-05	curtisc	CERT	PRP Certification Proof certified good
2021-09-05	Richard Thomas	CERT	PRP Certification Proof certified good
2021-09-05	H Michaelson	C-PRP	M305483/7942559/3879551250735679959161189868050447 : 53C19636E4327BB3 PRP proof power = 5 PRP: Verified Proof certified good
2021-09-05	mikr	C-PRP	M305483/7942559/3879551250735679959161189868050447 : 53C19636E4327BB3 PRP proof power = 5 PRP: Verified Proof certified good
2021-09-05	nordi	F-ECM	Factor: 3879551250735679959161189868050447 / (ECM curve 147, B1=250000, B2=38500000, Sigma=7641881865501293)
2020-04-18	Oliver Kruse	C-PRP	M305483/7942559 : 53C19636E4327BB3 PRP: Verified (Factored) PRP without proof (small exponent)
2017-12-11	ATH	C-PRP	M305483/7942559 : D3E1FE9ED1FE0FFA PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M305483/7942559 : D3E1FE9ED1FE0FFA PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M305483/7942559 : D3E1FE9ED1FE0FFA PRP: Verified (Factored) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M305483/7942559 : D3E1FE9ED1FE0FFA PRP without proof (not generated)