The largest current known prime number is
(2^136,279,841)-1
It is ~40 million digits long.
This one below
(2^100000000000031)-1
Has ~31 trillion digits.
Is it prime?
If so, this would then be the largest prime number that humanity has found.
Preliminary Pre screen tests up to 78 bit search space all passed.
Which is quite cool and validates it as a candidate worth trying!
Storing this number on a computer in bits is like more than a terabyte just for the number 😂
BIG DOG!
michaeldunworth / Michael Dunworth
npub1n4…l25h6
2026-05-09 08:38:30 UTC
Author Public Key
npub1n40lpgkc2gzvgr22cfamy6ymax225xe0707gfugle9rukx50k3lqvl25h6Published at
2026-05-09 08:38:30 UTCEvent JSON
{
"id": "aca9493c6ba52609f8f60939c0a8470f621affd1e6be1dc62135283c7452e83f",
"pubkey": "9d5ff0a2d85204c40d4ac27bb2689be994aa1b2ff3fc84f11fc947cb1a8fb47e",
"created_at": 1778315910,
"kind": 1,
"tags": [],
"content": "The largest current known prime number is \n\n(2^136,279,841)-1\n\nIt is ~40 million digits long.\n\nThis one below\n\n(2^100000000000031)-1\n\nHas ~31 trillion digits.\n\nIs it prime?\n\nIf so, this would then be the largest prime number that humanity has found.\n\nPreliminary Pre screen tests up to 78 bit search space all passed.\n\nWhich is quite cool and validates it as a candidate worth trying!\n\nStoring this number on a computer in bits is like more than a terabyte just for the number 😂\n\nBIG DOG!\n",
"sig": "8aa89b39d0c22dc795296a6bff45da10dd6e0cb736a81b98256d50de40398989682020476557cfe0fd36f942d8e83de9dcf332af1f160b78d6e0bfa81b7b4c46"
}