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Old 2009-11-21, 21:43   #486
Batalov
 
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"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

23C516 Posts
Default Riesel base 88

at 10.001K, 56 k's remain
444 464 711 1247 1601 1782 1932 2010 2013 2258 2417 2471 2493 2538 2744 3114 3168 3641 3735 3761 3773 3818 3819 3917 4356 4538 4572 4967 5027 5112 5121 5307 5517 5606 5892 6101 6329 6332 6353 6393 6498 6759 6876 6945 7386 7667 7842 7911 7968 8667 8810 8990 9326 9344 9647 9678

*some special cases:
1782 = square * base/4
4356 = square
3168 = 36 * base (36 itself was eliminated at n=1; faster search: 36 with odd n)
3773 = 3^3 * 11 (thus, n=3k-1 are algebraic)

Some larger primes
2382*88^7008-1
9213*88^7322-1
3474*88^7821-1
380*88^8712-1
5322*88^8766-1
3891*88^8957-1
3987*88^9379-1
4451*88^9727-1
6591*88^9909-1
4328*88^10001-1 (Don't you hate when this happens? :-)
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