1 423 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
1699063	7	20.7	old
104904621559	12	36.6	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	40830 / 40830
60	260000000	45627 / 105362

Estimated T-Level: 57.2 ⓘ

TF below 2^185 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	BBCA999508DB13E8	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	BBCA999508DB13E8	2	537	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	928B1DC2536601E6	2	427	5	3
Verified	No proof (small exponent)	2020-08-12	_p95holder_	928B1DC2536601E6	2	357	5	3

History

Date	User	Type	Result
2021-07-20	ViliamF	NF-PP1	Start=2/7, B1=1000000000, B2=221000000000
2021-03-27	nordi	NF-PM1	B1=1000000000000, B2=2232843418649129478
2020-08-12	_p95holder_	C-PRP	M1423/1699063/104904621559 : 928B1DC2536601E6
2020-04-17	Oliver Kruse	C-PRP	M1423/1699063/104904621559 : 928B1DC2536601E6
2017-10-12	kkmrkkblmbrbk	C-PRP	M1423/1699063/104904621559 : BBCA999508DB13E8
2017-09-21	Oliver Kruse	C-PRP	M1423/1699063/104904621559 : BBCA999508DB13E8
2017-09-21	Oliver Kruse	C-PRP	M1423/1699063/104904621559 : BBCA999508DB13E8
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=1000000000, B2=100000000000, E=12
2009-10-25	Carsten Kossendey	F	Factor: 178239561019899217