852 348 659 Exponent Status

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with PRP test

No factors below 2⁸⁶

TF target 2⁸⁵

P-1

B1 =	9000000
B2 =	2200903740

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	95 / 640

Estimated T-Level: 25.7 ⓘ

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

PRP

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2021-03-24	Kriesel	C8DD34E52939B88C	0	1	3
Verified	Certified Good Power=10	2022-07-31	Kriesel	C8DD34E52939B88C	0	1	3

History

Date	User	Type	Result
2026-01-09	Kriesel	NF-PP1	Start=6/5, B1=9000000, B2=2200000000
2025-09-20	-anonymous-	NF-PP1	Start=6/5, B1=9000000
2025-05-18	Kriesel	NF-PP1	Start=2/7, B1=9000000, B2=2200000000
2024-05-12	Kriesel	NF-PM1	B1=9000000, B2=2200903740
2022-09-29	LordJulius	NF	no factor TF: 72-73
2022-09-29	LordJulius	NF	no factor TF: 73-74
2022-09-29	LordJulius	NF	no factor TF: 71-72
2022-09-29	LordJulius	NF	no factor TF: 70-71
2022-09-29	LordJulius	NF	no factor TF: 1-70
2022-08-07	Kriesel	CERT	Proof certified good
2022-07-31	Kriesel	C-PRP	C8DD34E52939B88C Proof Certified Good Proof Power: 10
2021-03-24	Kriesel	C-PRP	C8DD34E52939B88C Proof Certified Good Proof Power: 10
2020-12-09	ViliamF	NF	no factor TF: 85-86
2020-02-14	Kriesel	NF-PM1	B1=8000000, B2=230000000
2019-10-11	Kriesel	NF-PM1	B1=5950000, B2=117512500
2019-08-21	Kriesel	NF	no factor TF: 84-85
2018-05-10	Mark Rose	NF	no factor TF: 83-84
2018-05-10	Mark Rose	NF	no factor TF: 82-83
2018-05-10	Mark Rose	NF	no factor TF: 81-82
2018-05-10	Mark Rose	NF	no factor TF: 80-81
2018-05-10	Mark Rose	NF	no factor TF: 79-80
2018-05-10	Mark Rose	NF	no factor TF: 78-79
2018-05-10	Mark Rose	NF	no factor TF: 77-78
2018-05-10	Mark Rose	NF	no factor TF: 76-77
2018-05-10	Mark Rose	NF	no factor TF: 75-76
2018-05-10	Mark Rose	NF	no factor TF: 74-75
2018-05-10	Mark Rose	NF	no factor TF: 73-74
2018-05-10	Mark Rose	NF	no factor TF: 72-73
2018-05-10	Mark Rose	NF	no factor TF: 71-72
2018-05-10	Mark Rose	NF	no factor TF: 70-71
2018-05-10	Mark Rose	NF	no factor TF: 64-70
2018-05-10	Mark Rose	NF	no factor TF: 1-64
2018-04-27	nranks	NF	no factor TF: 69-70
2018-01-07	O'Neil	NF	no factor TF: 79-80
2018-01-01	O'Neil	NF	no factor TF: 78-79
2017-12-29	O'Neil	NF	no factor TF: 77-78
2017-12-23	O'Neil	NF	no factor TF: 76-77
2017-12-22	O'Neil	NF	no factor TF: 75-76
2017-12-22	O'Neil	NF	no factor TF: 74-75
2017-12-22	O'Neil	NF	no factor TF: 73-74
2017-12-22	O'Neil	NF	no factor TF: 72-73
2017-12-22	O'Neil	NF	no factor TF: 71-72
2017-12-22	O'Neil	NF	no factor TF: 70-71
2017-01-25	ramgeis	NF	no factor TF: 68-70
2015-08-24	sasaki	NF	no factor TF: 67-68
2015-02-22	sasaki	NF	no factor TF: 66-67
2013-08-15	america64	NF	no factor TF: 65-66
2010-10-16	Architects Cubed	NF	no factor TF: 64-65
2010-04-15	Architects Cubed	NF	no factor TF: 63-64

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