Forum: enzocreti
2022-03-06, 12:54
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Replies: 14
Views: 13,892
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Forum: enzocreti
2022-01-03, 13:06
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Replies: 14
Views: 13,892
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Forum: enzocreti
2021-07-11, 20:35
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Replies: 14
Views: 13,892
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Forum: enzocreti
2021-07-11, 19:07
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Replies: 14
Views: 13,892
...
the last you said
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Forum: enzocreti
2021-07-11, 10:02
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Replies: 14
Views: 13,892
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Forum: enzocreti
2020-08-19, 05:48
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Replies: 14
Views: 13,892
Q77I
215 69660 92020 541456 are...
Q77I
215 69660 92020 541456 are congruent to plus or minus (6^k-1) mod 323 for k=3,2
69660=(2^5*3^7)-(2^3*3^4) so it is the difference of two 3 smooth numbers (2^a*3^b)-(2^(a-3)*3^(b-3))
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Forum: enzocreti
2020-03-30, 23:06
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Replies: 14
Views: 13,892
... I note also...
69660 I note also that
(lcm(215,344,559))^2=4999*10^5+69660-60
I notice that lcm(215,344,559)=22360
22360/(18*18)=69.01234567...
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Forum: enzocreti
2020-03-30, 17:39
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Replies: 14
Views: 13,892
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Forum: enzocreti
2020-03-30, 12:50
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Replies: 14
Views: 13,892
...
Well...
actually they are only probable primes... maybe in future they will be proven primes
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Forum: enzocreti
2020-03-30, 11:52
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Replies: 14
Views: 13,892
69660 and 92020
69660 and 92020 are multiple of 215 and congruent to 344 mod 559
92020=lcm(215,344,559)+69660
| denotes concatenation in base 10
2^69660-1 | 2^69559-1 is prime
2^92020-1 | 2^92019-1 is...
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Forum: enzocreti
2020-01-24, 15:31
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Replies: 14
Views: 13,892
215 , 51456, 69660, 92020, 541456
51456, 69660, 92020, 541456 are even and congruent to 10^n mod 41
pg(51456), pg(69660), pg(92020) and pg(541456) are prp
51456, 69660, 92020, 541456 are all congruent to 7*2^q-1 mod 13 with...
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Forum: enzocreti
2019-12-18, 08:26
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Replies: 14
Views: 13,892
69660, 92020, 541456
69660, 92020 and 541456 are 6 mod 13 (and 10^m mod 41)
69660, 92020 and 541456 are multiple of 43
is there a reason why
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Forum: enzocreti
2019-11-06, 13:46
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Replies: 14
Views: 13,892
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