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- - Results (https://www.mersenneforum.org/showthread.php?t=17187)

[CODE]no factor for k*2^50+1 in k range: 2200000000000000 to 2251799813685247 (101-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^50+1 in k range: 2251799813685248 to 2500000000000000 (102-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^50+1 in k range: 2500T to 2750T (102-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^50+1 in k range: 2750T to 3000T (102-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^51+1 in k range: 2200000000000000 to 2251799813685247 (102-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^51+1 in k range: 2251799813685248 to 2500000000000000 (103-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^51+1 in k range: 2500T to 2750T (103-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^51+1 in k range: 2750T to 3000T (103-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^52+1 in k range: 2200000000000000 to 2251799813685247 (103-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^52+1 in k range: 2251799813685248 to 2500000000000000 (104-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^52+1 in k range: 2500T to 2750T (104-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^52+1 in k range: 2750T to 3000T (104-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^53+1 in k range: 2200000000000000 to 2251799813685247 (104-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^53+1 in k range: 2251799813685248 to 2500000000000000 (105-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^53+1 in k range: 2500T to 2750T (105-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^53+1 in k range: 2750T to 3000T (105-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^54+1 in k range: 2200000000000000 to 2251799813685247 (105-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^54+1 in k range: 2251799813685248 to 2500000000000000 (106-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^54+1 in k range: 2500T to 2750T (106-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^54+1 in k range: 2750T to 3000T (106-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^55+1 in k range: 2200000000000000 to 2251799813685247 (106-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^55+1 in k range: 2251799813685248 to 2500000000000000 (107-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^55+1 in k range: 2500T to 2750T (107-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
no factor for k*2^55+1 in k range: 2750T to 3000T (107-bit factors) [mmff 0.27 mfaktc_barrett108_F32_63gs]
[/CODE]

[CODE]no factor for k*2^35+1 in k range: 71000000000000000 to 72057594037927935 (91-bit factors) [mmff 0.26 mfaktc_barrett96_F32_63gs]
no factor for k*2^35+1 in k range: 72057594037927936 to 80000000000000000 (92-bit factors) [mmff 0.26 mfaktc_barrett96_F32_63gs][/CODE]

[CODE]no factor for k*2^73+1 in k range: 1500T to 2000T (124-bit factors) [mmff 0.27 mfaktc_barrett128_F64_95gs]

no factor for k*2^74+1 in k range: 1500T to 2000T (125-bit factors) [mmff 0.27 mfaktc_barrett128_F64_95gs]

no factor for k*2^76+1 in k range: 1500T to 2000T (127-bit factors) [mmff 0.27 mfaktc_barrett128_F64_95gs][/CODE]

[Wed Jan 30 04:33:33 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 30500T to 30600T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]
[Sat Feb 02 19:37:12 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 30600T to 30700T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]
[Mon Feb 04 15:37:14 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 30700T to 30800T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]
[Wed Feb 06 11:31:16 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 30800T to 30900T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]
[Fri Feb 08 07:25:15 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 30900T to 31000T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]

[CODE]no factor for MM31 in k range: 51P to 52P (88-bit factors) [mmff 0.27 mfaktc_barrett89_M31gs]
no factor for MM31 in k range: 52P to 53P (88-bit factors) [mmff 0.27 mfaktc_barrett89_M31gs][/CODE]

[code]
no factor for MM31 in k range: 53P to 55P (88-bit factors) [mmff 0.27 mfaktc_barrett89_M31gs]
[/code]

[Mon Feb 04 05:50:49 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 33000T to 33100T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]
[Tue Feb 05 17:03:51 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 33100T to 33200T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]
[Thu Feb 07 04:16:52 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 33200T to 33300T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]
[Fri Feb 08 15:28:55 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 33300T to 33400T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]
[Sun Feb 10 02:41:56 2013]
UID: aketilander/OBD, no factor for MM127 in k range: 33400T to 33500T (183-bit factors) [mmff 0.27 mfaktc_barrett183_M127gs]

no factor for k*2^36+1 in k range: 50P to 70P (92-bit factors) [mmff 0.26 mfaktc_barrett96_F32_63gs]
no factor for k*2^36+1 in k range: 70000000000000000 to 72057594037927935 (92-bit factors) [mmff 0.26 mfaktc_barrett96_F32_63gs]
no factor for k*2^36+1 in k range: 72057594037927936 to 90000000000000000 (93-bit factors) [mmff 0.26 mfaktc_barrett96_F32_63gs]

I will keep searching.

[CODE]no factor for MM89 in k range: 3500T to 4000T (142-bit factors) [mmff 0.26 mfaktc_barrett152_M89gs][/CODE]

[code]
no factor for k*2^35+1 in k range: 80P to 90P (92-bit factors) [mmff 0.26 mfaktc_barrett96_F32_63gs]
[/code]

[CODE]no factor for MM61 in k range: 17500000000000000 to 18014398509481983 (116-bit factors) [mmff 0.27 mfaktc_barrett120_M61gs]
no factor for MM61 in k range: 18014398509481984 to 18500000000000000 (117-bit factors) [mmff 0.27 mfaktc_barrett120_M61gs]
no factor for MM61 in k range: 18500000000M to 19999943964M (117-bit factors) [mmff 0.27 mfaktc_barrett120_M61gs][/CODE]