40 127 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
7784639	7	22.9	old
12243666566814219527	20	63.4	2009-04-22 01:31:51
2788235927157246999696783155286540649	37	121.1	2021-09-28 12:05:12

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	720 / 4588

Estimated T-Level: 35.8 ⓘ

TF below 2^114 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-21	Oliver Kruse	70B0ED96783CFEE4	2	0	1	3
Verified (Factored)	2017-10-13	kkmrkkblmbrbk	70B0ED96783CFEE4	2	24302	1	3
Verified (Factored)	2020-04-17	Oliver Kruse	7A0CD72C8F4997ED	2	26586	5	3
Verified	2021-09-28	SRJ2877	7A0CD72C8F4997ED	3	6795	5	3

History

Date	User	Type	Result
2021-12-22	Lisander Viaene	NF-PM1	B1=1000000000, B2=488172244560
2021-12-21	Lisander Viaene	NF-PM1	B1=1250000000
2021-12-19	Lisander Viaene	NF-PM1	B1=1100000000
2021-12-17	Lisander Viaene	NF-PM1	B1=1000000000
2021-09-28	SRJ2877	C-PRP	M40127/7784639/12243666566814219527/2788235927157246999696783155286540649 : 7A0CD72C8F4997ED PRP: Verified PRP without proof (small exponent)
2021-09-28	debrouxl	F-ECM	Factor: 2788235927157246999696783155286540649 / (ECM curve 188, B1=1000000, B2=100000000, Sigma=5119192058582226)
2021-05-08	ATH	NF-PP1	Start=2/7, B1=100000000, B2=10000000000
2020-04-17	Oliver Kruse	C-PRP	M40127/7784639/12243666566814219527 : 7A0CD72C8F4997ED PRP: Verified PRP without proof (small exponent)
2017-10-13	kkmrkkblmbrbk	C-PRP	M40127/7784639/12243666566814219527 : 70B0ED96783CFEE4 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M40127/7784639/12243666566814219527 : 70B0ED96783CFEE4 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M40127/7784639/12243666566814219527 : 70B0ED96783CFEE4 PRP without proof (not generated)
2016-09-13	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=2000000000, E=12
2009-04-22	Matthias Wurtinger	F-ECM	Factor: 12243666566814219527