factordb · 1701411834…27<39>

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P · Proven prime

id #1000000000000000127 39 digits

★

Interesting number. Proved prime by Lucas in 1876 with his new test: the largest known prime for 75 years until 1951 and still the largest proved by hand; also the double Mersenne number MM7.

Value

1701411834…27<39>

term 2^127-1

1701411834…27<39>

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Is factor of

Primality

Verified directlyproven prime

Checked deterministically (below 300 digits).

From the command linefdb · curl

fdb

fdb number 'M127' --detail 2

curl

curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"expr":"M127"},"decimal":false,"detail":2}}'