fond of a factor? Urn yourself to become inane

[ET_]

Originally Posted by James Heinrich

All within 1 bit of each other?? That's... unusual.

...fascinating... (C)

[firejuggler]

M27152453 has a 77.503-bit (24-digit) factor: 214211625581311913643047 (P-1,B1=1350000,B2=89100000)


Long live large B2!

k= 7 × 83 × 173 × 577 × 68 015 191

[Runtime Error]

Indeed!!!

Originally Posted by firejuggler

Long live large B2!

M102202943 has a 110.005-bit (34-digit) factor: 1302388182362272479207770608381153 (P-1,B1=1500000,B2=45000000,E=12)

min B2 = 24 878 501

M102057829 has a 100.217-bit (31-digit) factor: 1473595630881614096459261244097 (P-1,B1=1500000,B2=91500000)

min B2 = 63 240 223

[nomead]

Originally Posted by nomead

https://www.mersenne.ca/exponent/4217750177

It already had one factor, now it has four more.

67.472 - 66.121 = 1.351

By that measure, then, these four are bunched up even closer:
https://www.mersenne.ca/exponent/4241699879

67.221 - 65.933 = 1.288

[Jwb52z]

P-1 found a factor in stage #2, B1=736000, B2=19894000.
UID: Jwb52z/Clay, M102192683 has a factor: 1528515278715554871122431 (P-1, B1=736000, B2=19894000)

80.338 bits.

[Jwb52z]

P-1 found a factor in stage #1, B1=737000.
UID: Jwb52z/Clay, M102256103 has a factor: 417298926313351006345081 (P-1, B1=737000),

78.465 bits.

[Stargate38]

TF Result:

UID: stargate38/GTX1650, M4197560041 has a factor: 7284080534216661181663 [TF:31:73:mfaktc 0.21 75bit_mul32_gs]

72.625 bits; k=3*4337*4561*14621

[storm5510]

I pulled these from my results on Primenet:

M103813579, Factor: 19610018312363450480303 / TF: 74-75
M103811881, Factor: 37646989331843629835057 / TF: 74-75

I had been running GPUto72 for a couple of weeks. 23 digits each. I did not bother with bits.

[retina]

Originally Posted by storm5510

23 digits each. I did not bother with bits.

Let me guess. Umm, 74.xxx bits perhaps?

[Runtime Error]

Props to Kriesel for knocking me out of the Top 500 with this enormous factor!!!

M101837677 has a 128.604-bit (39-digit) factor: 517050261390286174198141026167350661719 (P-1,B1=1000000,B2=30000000)

[storm5510]

Originally Posted by retina

Let me guess. Umm, 74.xxx bits perhaps?

If you want to look at it this way, yes. GPUto72 is currently running to 76 bits, a prep for the next step. Before, this would be P-1, but now, I am not sure.

Originally Posted by Runtime Error

Props to Kriesel for knocking me out of the Top 500 with this enormous factor!!!

I too have found a 39-digit factor. This was on 5/05/2019. Mine was ECM. M83621. It is here. I never checked on any list to see if it was there. Doing so never seemed important at the time.