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Message 11637 - Posted: 23 Apr 2026, 17:26:48 UTC

R745 tested to n=500k (400-500k)

nothing found, 14 remain

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Message 11643 - Posted: 24 Apr 2026, 10:08:15 UTC

R984 tested to n=500k (300-500k)

nothing found, 3 remain

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Message 11645 - Posted: 29 Apr 2026, 12:29:49 UTC

R19 tested to n=300k (250-300k)

23 primes found, 652 remain

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Message 11649 - Posted: 30 Apr 2026, 21:53:43 UTC

R109 tested to n=1.2M (1M-1.2M)

nothing found, 1 remain

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Message 11650 - Posted: 1 May 2026, 7:52:16 UTC

R55 tested to n=700k (600-700k)

nothing found, 5 remain

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Message 11652 - Posted: 3 May 2026, 6:27:11 UTC

R123 tested to n=1.2M (1M-1.2M)

nothing found, 1 remain

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Message 11656 - Posted: 4 May 2026, 21:11:28 UTC

S193 tested to n=500k (300-500k)

1 prime found, 20 remain

7908*193^424526+1 found by Science United (TOP5000)

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Message 11658 - Posted: 6 May 2026, 9:48:19 UTC

R133 tested to n=1.2M (1M-1.2M)

nothing found, 1 remain

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Message 11662 - Posted: 9 May 2026, 11:58:34 UTC

S45 tested to n=700k (500-700k)

3 primes found, 18 remain

4530*45^515303+1 found by Goldislops (TOP5000)
6510*45^576060+1 found by Sightus@CAU (TOP5000)
34864*45^679202+1 found by Sightus@CAU (TOP5000)

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Message 11663 - Posted: 9 May 2026, 12:02:15 UTC

S198 tested to n=500k (300-500k)

6 primes found, 18 remain (+2 duplicate k-values are prime)

2400*198^306460+1 found by Sightus@CAU
3431*198^329623+1 found by DukeBox
2400*198^341554+1 found by Sightus@CAU
2427*198^359830+1 found by cineon_lut [BlackOps]
2287*198^371608+1 found by Science United
4065*198^384400+1 found by Science United
2427*198^387222+1 found by Arkhenia (TOP5000)
2389*198^393078+1 found by LCB001 (TOP5000)

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Message 11695 - Posted: 21 May 2026, 7:56:09 UTC

S48 tested to n=1M (700k-1M)

2 primes found, 4 remain

561*48^711808+1 found by [SG-FC] dingdong (TOP5000)
153*48^825719+1 found by Dukebox (TOP5000)

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Message 11697 - Posted: 21 May 2026, 10:53:51 UTC
Last modified: 21 May 2026, 10:58:29 UTC

R2 even-n tested to n=11M (10-11M)

nothing found, 2 remain

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Message 11716 - Posted: 25 May 2026, 7:08:01 UTC

R136 tested to n=500k (300-500k)

6 primes found, 26 remain (+1 duplicate k-value is prime)

55950*136^305018-1 found by DukeBox
10002*136^314827-1 found by priester
55950*136^345078-1 found by jman444
55143*136^354931-1 found by Science United
78494*136^367158-1 found by Science United
52473*136^414542-1 found by Science United
67818*136^424135-1 found by Science United (TOP5000)

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Message 11826 - Posted: 3 Jun 2026, 16:38:49 UTC

R277 tested to n=500k (300-500k)

nothing found, 20 remain

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Message 11829 - Posted: 5 Jun 2026, 17:19:05 UTC

R87 tested to n=700k (500-700k)

1 prime found, 9 remain

562*87^641685-1 found by Dukebox (TOP5000)

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Message 11834 - Posted: 6 Jun 2026, 9:27:58 UTC

S213 tested to n=500k (300-500k)

2 primes found, 12 remain

3838*213^363006+1 found by Markfw
2956*213^433664+1 found by emoga (TOP5000)

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Message boards : Number crunching : Results of bases


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