P-1 found a factor in stage #1, B1=695000.
UID: Jwb52z/Clay, M86793739 has a factor: 910549085913587826291193 (P-1, B1=695000)

79.591 bits.

P-1 found a factor in stage #2, B1=695000, B2=12683750.
UID: Jwb52z/Clay, M86799803 has a factor: 1192325946520069040995537 (P-1, B1=695000, B2=12683750)

79.980 bits.

P-1 found a factor in stage #1, B1=675000.
UID: Jwb52z/Clay, M85739737 has a factor: 679361995807826610400111 (P-1, B1=675000)

79.169 bits.

Sometimes aliquot factoring can give you a nice rush of blood to the head for a second:

[CODE]GMP-ECM 7.0.4 [configured with GMP 6.1.2, --enable-asm-redc] [ECM]
Input number is 1517439814201108887897934862271262558104534535301883255672348462116670999816566813931054817374035671332731471319464058197572039195388873161 (139 digits)
Using B1=110000000, B2=776278396540, polynomial Dickson(30), sigma=1:2976032775
Step 1 took 207818ms
Step 2 took 81363ms
********** Factor found in step 2: 10480969962437176114024058906626759361702940245272292968255351471223212992493
Found [SPOILER]composite[/SPOILER] factor of 77 digits: 10480969962437176114024058906626759361702940245272292968255351471223212992493
Prime cofactor 144780475436860556690897274398404208790676771300263567589078477 has 63 digits[/CODE]

Nothing to write home about, of course, but a nice rush while grepping output files for "found"... :rolleyes:

I found factor: 10954941885802061514527896888954730695799694887 (M42727 - ECM curve 189, B1=3000000, B2=300000000) 152.940 bits - 47 digits :fusion:

Not as flashy as yours :bow:, but a new one just popped up. One less to go...


UID: lycorn/asteroid, M[B]502141[/B] has a factor: [B]7507285166367433962860321[/B] (ECM curve 70, B1=250000, B2=25000000)

82.6 bits

k = 24 × 5 × 296269 × 315392263213

[QUOTE=Miszka;486146]I found factor: 152.940 bits [/QUOTE]

Nice one!!

[URL="https://www.mersenne.org/report_exponent/?exp_lo=87297169&exp_hi=&full=1"] M87297169[/URL] has a factor: 42094798243921532482960513482130070610271580522731637977 - 184.780 bits (P-1, B1=705000, B2=13218750, E=12)

Composite (84.996 + 99.783 bits) of course.

After over 3 weeks without new factors, I got two factors for the same number within 24 hours:

M27067 has a factor: 15021033803699159980877285173903129 (ECM curve 306, B1=3000000, B2=300000000)
M27067 has a factor: 559863370256975086095817920861703 (ECM curve 161, B1=3000000, B2=300000000)

108.8 and 113.5 bits / 33 and 35 digits

Sorry for being offtopic, but i'd like to avoid stepping on someone's toes by doing ECM on the same exponents;

Is the user James Hintz also in this forum?

[QUOTE=heliosh;487199]Sorry for being offtopic, but i'd like to avoid stepping on someone's toes by doing ECM on the same exponents;

Is the user James Hintz also in this forum?[/QUOTE]

I believe his forum username is WVU Mersenneer.