Mark Rodenkirch's MultiSieve.exe
(Another of the Prime Pages' resources)
The Largest Known Primes Icon
  View this page in:   language help
 
program A titan, as defined by Samuel Yates, is anyone who has found a titanic prime. This page provides data on those that have found these primes. The data below only reflect on the primes currently on the list. (Many of the terms that are used here are explained on another page.)

Proof-code(s):
p75, p77, p93, p95, p99 ... ... L4718, L4779, L4780, L4784, p402
E-mail address: mgrogue@wi.rr.com
Web page:http://home.roadrunner.com/~mrodenkirch
Username: MultiSieve (entry created on 01/22/2003)
Database id:449 (entry last modified on 04/08/2018)
Program Does *: sieve
Active primes:on current list: 38, rank by number 16
Total primes: number ever on any list: 280
Production score: for current list 52 (normalized: 3609), total 52.0999, rank by score 14
Largest prime: 8508301 · 217016603 - 1 ‏(‎5122515 digits) via code L4784 on 03/22/2018
Most recent: 226400 · 63226400 - 1 ‏(‎407377 digits) via code L4780 on 09/26/2018
Entrance Rank: mean 1207.97 (minimum 13, maximum 5198)

Descriptive Data: (report abuse)
This program is used for sieving numbers of some popular forms that are not supported in NewPGen or any of the other popular sieves. This includes:
  • factorials (n!+/-1)
  • multi-factorials (n!x+/-1 for x > 1, e.g. n!5+1 = n!!!!!+1)
  • primorial (p# +/- 1)
  • Cullens/Woodalls (n*2^n+/-1)
  • Generalized Cullens/Woodalls (n*b^n+/-1 for b > 2), x^y+y^x
  • Cylotomics of factorial/multifactorial form (Phi(a, n!) and Phi(a, n!x) for a <= 24)
  • Carol/Kynea (2^n +/- 1)^2 - 2
  • x^y + y^x
  • k*b^b +/- 1
  • Hyper Cullen/Woodall k^b*b^k +/- 1
  • Near Cullent/Woodall (k +/- 1)*b^k +/- 1

If you desire MultiSieve to sieve for new forms, please contact me. I have both x86 and PowerPC versions of MultiSieve.

I administer Mark Rodenkirch's MultiSieve.exe and I would like to
Edit this page
Surname: MultiSieve (used for alphabetizing and in codes)
Unverified primes are omitted from counts and lists until verification completed.