1 937 233 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
2227817951	10	31.1	old
1990366118246025635516119	25	80.7	2021-02-16 18:51:14

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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)	2017-09-30	alpertron	782E22D2D06B646F	1	0	1	3
Verified (Factored)	2017-10-20	Oliver Kruse	782E22D2D06B646F	1	1848221	1	3
Verified	2021-02-17	mrh	B91D7C2DC76873E4	2	1608877	5	3

History

Date	User	Type	Result
2021-02-17	curtisc	CERT	PRP Certification Proof certified good
2021-02-17	mrh	C-PRP	M1937233/2227817951/1990366118246025635516119 : B91D7C2DC76873E4 PRP proof power = 7 PRP: Verified Proof certified good
2021-02-16	_p95holder_	F-ECM	Factor: 1990366118246025635516119 / (ECM curve 7, B1=50000, B2=5000000)
2017-10-20	Oliver Kruse	C-PRP	M1937233/2227817951 : 782E22D2D06B646F PRP: Verified (Factored) PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1937233/2227817951 : 782E22D2D06B646F PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12