1 781 699 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
213803881	9	27.7	old
1286386679	10	30.3	2008-07-15 07:46:32
62528615939663	14	45.8	2014-01-30 08:34:40
240790233549702155279	21	67.7	2018-12-01 12:12:34
16632424275424620387377	23	73.8	2020-05-19 22:02:33

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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)	2017-10-03	Oliver Kruse	0C817B47B4669005	3	0	1	3
Verified (Factored)	2017-11-04	ATH	0C817B47B4669005	3	1252776	1	3
Verified (Factored)	2018-12-01	rucio	721567AD24C1BF67	4	52408	5	3
Verified (Factored)	2018-12-03	Oliver Kruse	721567AD24C1BF67	4	720898	5	3
Verified	2020-05-20	M Miller	721567AD24C1BF67	5	867487	5	3

History

Date	User	Type	Result
2020-05-20	M Miller	C-PRP	M1781699/213803881/1286386679/62528615939663/240790233549702155279/16632424275424620387377 : 721567AD24C1BF67 PRP: Verified PRP without proof (not generated)
2020-05-19	nordi	F-ECM	Factor: 16632424275424620387377 / (ECM curve 2, B1=50000, B2=5000000, Sigma=1233344114661468)
2018-12-03	Oliver Kruse	C-PRP	M1781699/213803881/1286386679/62528615939663/240790233549702155279 : 721567AD24C1BF67 PRP: Verified PRP without proof (not generated)
2018-12-01	rucio	C-PRP	M1781699/213803881/1286386679/62528615939663/240790233549702155279 : 721567AD24C1BF67 PRP: Verified PRP without proof (not generated)
2018-12-01	Chang Chia-Tche	F-ECM	Factor: 240790233549702155279 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-04	ATH	C-PRP	M1781699/213803881/1286386679/62528615939663 : 0C817B47B4669005 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1781699/213803881/1286386679/62528615939663 : 0C817B47B4669005 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-01-30	TJAOI	F	Factor: 62528615939663
2008-07-15	J Feitsma	F	Factor: 1286386679