World!Of
Numbers

WON plate
77 |


On [ June 14, 2000 ] Paul Leyland made a new breakthrough by cracking
the C137 composite number from step 74 of HP(49) - or step 73 of HP(77) - using ECM.
See my Homeprime webpage about
'Repeated Factorisation of Concatenated Primefactors of the Composite Numbers'

After almost six months of computation on a PII-300, Paul Leyland can reveal that
this number factors as p46 * p91. It was found after ~ 5000 curves at B1=3M and
3350 curves at B1=11M.

The two factors are respectively
3804796914905629947782783176497447433056300673
and
297575514989250201776144220639738150129498705/
0078840501836673559420025718611870754546792073

My compliments to you, Paul ! go directly to step 74

A000077 Prime Curios! Prime Puzzle
Wikipedia 77 Le Nombre 77 Numberland 77














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Patrick De Geest - Belgium - Short Bio - Some Pictures
E-mail address : pdg@worldofnumbers.com