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M63 918 553 Mersenne number exponent details
| Last-known PrimeNet details:
Exponent is not assigned to anyone 0 primality tests remaining
| Residue | Status |
---|
L-L | -unknown- | -unknown- |
---|
PRP | -unknown- | -unknown- |
---|
|
| Trial Factoring | P-1 Factoring | Combined |
---|
Limit | GHz-days | Probability | B1 | B2 | GHz-days | Probability | GHz-days | Probability |
---|
Actual | 272 | 14.9618 | 63.8889 % | - | - | - | - | 14.9618 | 63.8889 % |
---|
Target | 274 | 59.8553 | 64.8649 % | 400000 | 70000000 | 14.2786 | 3.7903 % | 74.1339 | 66.1966 % |
---|
Difference | -2 | -44.8936 | -0.9760 % | -400000 | -70000000 | -14.2786 | -3.7903 % | -59.1722 | -2.3077 % |
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Known prime factors (1 factor, 72.9 bits, 0.00011402% known):
Trial Factoring results:57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 |
| Bits | Factor |
---|
date | userid | compid | from | to | factor | bits* | digits | GHz-days |
---|
1999-11-17 | ANONYMOUS | v4_computers | 21 | 250 | | | | 2.30000e-6 |
2003-08-25 | Gordon Spence | v4_computers | 21 | 259 | | | | 0.001 |
2022-03-30 | LordJulius | Manual testing | 21 | 263 | | | | |
2009-02-21 | Wojciech Florek | armada4 | 263 | 264 | | | | 0.031 |
2009-09-11 | Sturle Sunde | danzi.ifi | 264 | 265 | | | | 0.058 |
2009-11-11 | GrunwalderGIMP | compute-0-1 | 265 | 266 | | | | 0.117 |
2009-11-16 | ASTERIAS | Roo | 266 | 267 | | | | 0.234 |
2009-11-26 | Ungelovende | i7_1 | 267 | 268 | | | | 0.468 |
2009-11-28 | Sturle Sunde | gibus.ifi | 268 | 269 | | | | 0.935 |
2012-01-16 | Dave Rutherford | mongo | 269 | 270 | | | | 1.871 |
2012-10-02 | ANONYMOUS | | 270 | 271 | | | | 3.741 |
2013-08-12 | Bill Staffen | Manual testing | 271 | 273 | | 72.881 | 22 | 10.41 |
ECM factoring results:No ECM results for
M63918553
Lucas-Lehmer results:No L-L results for
M63918553
P-1 factor-bounds graph:- X = B1; Y = B2
- size of marker relates to size of factor
- mouse-over any factor marker (circle) to see additional info
- mouse-over any stage bound text to see additional info
102
103
104
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
273
271
270
269
268
267
266
265
264
263
259
250
this exponent TF target: 74
250
260
270
280