factordbrpc · fdb
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Inverse home prime · Base 2 of 428 length 107 Not fully computed yet - the last known term is composite. ↓ .elf file
Show sequence-development graph
Term size (digits) across the sequence
How the sequence develops - decimal digits of each term vs iteration.
nStatus DigitsTermFactorization
87 Fully factored 70 9016682251…10<70> 2×5×193×199×11487071×223680777841<12>×9136890291…83<46>
88 Fully factored 71 8836658067…74<71> 2×19×3019676229…83<21>×7700945917…31<49>
89 Fully factored 72 5818670222…18<72> 2×7×1933×2156017×308599553×3247862758…31<23>×9949899891…19<30>
90 Fully factored 73 5547254555…74<73> 2×17789×5571539×2365252642…51<13>×1183161021…47<50>
91 Fully factored 74 5721415628…30<74> 2×5×59×3209×15467×3112069×316600697299<12>×1982962946…89<46>
92 Fully factored 75 6284260424…74<75> 2×3×7×42677×61081346761<11>×2080024770…83<25>×2759522185…97<34>
93 Fully factored 76 3846212570…46<76> 2×7×409×3523112237…81<30>×1906581876…41<43>
94 Fully factored 77 1979907817…94<77> 2×11×1709×4364043067…17<22>×1206677456…09<51>
95 Fully factored 77 7468971686…54<77> 2×41×199×2371×4098437952…71<35>×4710250082…33<35>
96 Fully factored 78 5252104345…06<78> 2×1429×3042209×7906523×51536039×1482468587…59<54>
97 Fully factored 79 2867511283…70<79> 2×32×5×3203×7780500177…39<31>×1278492458…19<43>
98 Fully factored 80 2719052748…50<80> 2×52×11×457×1523×33206323279<11>×4083656512…93<22>×5238040391…57<39>
99 Fully factored 81 3650381378…70<81> 2×3×5×11×1106176175…39<79>
100 Fully factored 82 2265448806…74<82> 2×3×283×5988011×3151707186…57<16>×2288910232…17<26>×3088583553…57<31>
101 Fully factored 83 3697844159…02<83> 2×97×419×215239×10272247×20166232157<11>×1020285394…97<56>
102 Fully factored 84 4041766852…54<84> 2×11×173×5404073×503310722813<12>×3904317109…41<62>
103 Fully factored 85 2950018600…62<85> 2×68227×2161914345…53<80>
104 Fully factored 86 1133465748…74<86> 2×59×137×26561×1238917×2400761353…41<34>×8875037585…17<37>
105 Fully factored 87 1037670557…94<87> 2×3×199×105256774703<12>×1773454755…29<16>×1802252859…89<22>×2583266861…57<36>
106 Composite 87 7732119034…34<87> 2×32×3072585648…79<13>×1398047825…97<74>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (74 digits) of term #106:
13980478259302488901344417305812700655289369382039488284505299790913860697
Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:
level 0 done · takes up to a minute
From the command linefdb · curl
fdb
fdb seq view '428' --type 12 --part last20
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"sequence_view","params":{"start":{"expr":"428"},"type":12,"part":"last20","fr":0}}'