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Message boards : Extended Sierpinski Problem : k=193997 Eliminated!

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Profile Michael GoetzProject donor
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (4,119,346)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,046,112)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,212,287)
Message 116876 - Posted: 6 Apr 2018 | 12:41:17 UTC

K=193997 Eliminated!

On April 3rd, Tom Greer (tng*) of the United States discovered the 3,447,670 digit mega prime:

193997*2^11452891+1

This is the first ESP k elimination in over three years. 10 k's remain in the Extended Sierpinski problem, plus the 12 remaining k's in the Sierpinski Problem (aka "Seventeen or Bust") and the Prime Sierpinski Problem.

This is the 23rd largest known prime number. It is PrimeGrid's 38th mega prime of 2018, and our 234th overall. In over ten years of operation, this is also PrimeGrid's 11th prime of at least 3 million digits, the last three of which have been found within a 15 day period.

Link to the top T5K entry: http://primes.utm.edu/primes/page.php?id=124564
Link to the official announcement: http://www.primegrid.com/download/ESP-193997.pdf

As a result of eliminating this k, we've pulled the remaining candidates with k=193997 and n>11452891 from the system. A small number of those candidates were already in the pipeline to be processed, so there may be a few that get sent out.

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Message boards : Extended Sierpinski Problem : k=193997 Eliminated!

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