450 383 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
1001895367681140451858881103	28	89.7	2010-04-07 20:15:48
2594674494286576572658627241	28	91.1	2020-09-21 16:17:32
15387356328327201432150617617	29	93.6	2016-10-19 07:58:53

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	291 / 640

Estimated T-Level: 27.3 ⓘ

TF below 2^86 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	2148	0
Verified (Factored)		Larry English	12D4241A73D6E148	0
Verified (Factored)		Eivind Triel	12D4241A73D6E148	211338
Verified (Factored)	2002-02-03	Binary Digits	12D4241A73D6E148	134952

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-27	Oliver Kruse	95C279EC5FA056E2	2	0	1	3
Verified (Factored)	2017-10-13	Oliver Kruse	95C279EC5FA056E2	2	281396	1	3
Verified (Factored)	2017-12-16	ATH	95C279EC5FA056E2	2	238128	1	3
Verified (Factored)	2020-04-18	Oliver Kruse	ECBEA2CF51436903	2	433167	5	3
Verified	2020-09-21	ATH	ECBEA2CF51436903	3	249867	5	3

P-1 factors

Date	Factor	B1	B2
2016-10-19	15387356328327201432150617617	5000000	40000000

History

Date	User	Type	Result
2020-09-21	Jaron Wakley	CERT	PRP Certification Proof certified good
2020-09-21	ATH	C-PRP	M450383/1001895367681140451858881103/15387356328327201432150617617/2594674494286576572658627241 : ECBEA2CF51436903 PRP proof power = 6 PRP: Verified Proof certified good
2020-09-21	nordi	F-ECM	Factor: 2594674494286576572658627241 / (ECM curve 91, B1=250000, B2=25000000, Sigma=3963231517742581)
2020-04-18	Oliver Kruse	C-PRP	M450383/1001895367681140451858881103/15387356328327201432150617617 : ECBEA2CF51436903 PRP: Verified (Factored) PRP without proof (small exponent)
2017-12-16	ATH	C-PRP	M450383/1001895367681140451858881103/15387356328327201432150617617 : 95C279EC5FA056E2 PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-13	Oliver Kruse	C-PRP	M450383/1001895367681140451858881103/15387356328327201432150617617 : 95C279EC5FA056E2 PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-27	Oliver Kruse	C-PRP	M450383/1001895367681140451858881103/15387356328327201432150617617 : 95C279EC5FA056E2 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-24	Oliver Kruse	C-PRP	M450383/1001895367681140451858881103/15387356328327201432150617617 : 95C279EC5FA056E2 PRP without proof (not generated)
2016-10-19	kkmrkkblmbrbk	F-PM1	Factor: 15387356328327201432150617617 / (P-1, B1=5000000, B2=40000000, E=12)
2016-03-17	alpertron	NF-PM1	B1=3000000, B2=100000000, E=12
2010-04-07	Sturle Sunde	F-ECM	Factor: 1001895367681140451858881103