1 484 047 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

1484047

Composite: proven not-prime with both PRP and Lucas-Lehmer tests

No factors below 2⁶⁸

TF target 2⁶¹

TF below 2^81 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	15700000
B2 =	101707191300

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		The Grebelius Family	E10757FCC1289457	0
Verified	1999-02-07	Kent Lee	E10757FCC1289457	328418
Verified	2015-07-19	MadPoo	E10757FCC1289457	1222571

PRP

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-09-01	Kriesel	86D80589A2A3DFC6	0	1	3

History

Date	User	Type	Result
2025-09-03	Carlos Pinho	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-01	Kriesel	C-PRP	86D80589A2A3DFC6 PRP proof power = 6 PRP: Verified Proof certified good
2023-10-13	Sid & Andy	NF-PM1	B1=15700000, B2=101707191300
2023-08-03	Joss	NF-PM1	B1=1484047, B2=19157574150
2022-08-16	Wentao Huang	NF-PM1	B1=1790000, B2=8932014000
2020-05-28	Gordon Spence	NF	no factor from 2^67 to 2^68
2018-10-15	Joss	NF-PM1	B1=1484047, B2=163245170, E=12
2018-03-18	Joss	NF-PM1	B1=1484047, B2=148404700, E=12
2018-03-17	Joss	NF-PM1	B1=1484047, B2=60000000, E=12
2018-02-19	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-09-23	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-19	MadPoo	C-LL	E10757FCC1289457
2015-04-05	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-05	snme2pm1	NF	no factor from 2^63 to 2^64
2015-03-18	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2015-03-14	Joss	NF-PM1	B1=573562
2015-03-05	Joss	NF-PM1	B1=521420
2015-03-01	Joss	NF-PM1	B1=474019
2015-02-23	Joss	NF-PM1	B1=430927
2015-02-12	Joss	NF-PM1	B1=391752
2015-01-29	Joss	NF-PM1	B1=323763
2014-11-25	Joss	NF-PM1	B1=243249
2011-04-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-01-15	Rob_Dee	NF-PM1	B1=200000, B2=5000000, E=6
2011-01-14	Rob_Dee	NF-PM1	B1=200000, B2=4000000, E=6
2011-01-13	Rob_Dee	NF-PM1	B1=200000, B2=3000000, E=6
2011-01-12	Rob_Dee	NF-PM1	B1=200000, B2=2000000, E=6
2011-01-11	Rob_Dee	NF-PM1	B1=200000, B2=1000000, E=6
2011-01-09	Rob_Dee	NF-PM1	B1=200000, B2=300000
2011-01-08	Rob_Dee	NF-PM1	B1=100000, B2=200000
2010-05-08	Architects Cubed	NF	no factor from 2^60 to 2^61

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