7 499 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 3 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
99121783	8	26.6	old
284222298641	12	38.0	old
150250803433909591180118210911	30	96.9	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	12803 / 16550

Estimated T-Level: 48.9 ⓘ

TF below 2^157 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	F2E3219347646E55	3	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	F2E3219347646E55	3	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	F2E3219347646E55	3	4637	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	0A143821AEC74BCC	3	6829	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	0A143821AEC74BCC	3	7462	5	3

History

Date	User	Type	Result
2025-04-05	masser	NF-PP1	Start=158/53, B1=830000000, B2=829170000000
2025-03-27	masser	NF-PP1	Start=6/5, B1=830000000, B2=829170000000
2025-03-17	masser	NF-PP1	Start=2/7, B1=830000000, B2=829170000000
2024-02-03	Wentao Huang	C-PRP	M7499/99121783/284222298641/150250803433909591180118210911 : 0A143821AEC74BCC
2023-09-03	-anonymous-	NF-PM1	B1=40000000000, B2=169617550478676300
2021-07-06	ViliamF	NF-PM1	B1=1000000000, B2=201000000000
2020-04-17	Oliver Kruse	C-PRP	M7499/99121783/284222298641/150250803433909591180118210911 : 0A143821AEC74BCC
2017-12-07	ATH	C-PRP	M7499/99121783/284222298641/150250803433909591180118210911 : F2E3219347646E55
2017-10-02	kkmrkkblmbrbk	C-PRP	M7499/99121783/284222298641/150250803433909591180118210911 : F2E3219347646E55
2017-09-21	Oliver Kruse	C-PRP	M7499/known_factors : F2E3219347646E55