3 ms·
Edit: the OP is correct, I was confused by the forum name, as I thought it was about Mersenne primes, but this is about Repunit primes. Original response: Alm
by krasin 4y ago
Edit: the OP is correct, I was confused by the forum name, as I thought it was about Mersenne primes, but this is about Repunit primes.
Original response:
Almost correct, but it's 2^49081-1, not (10^49081-1)/9. And there's no division by 9 at all.
https://en.wikipedia.org/wiki/Mersenne_prime https://en.wikipedia.org/wiki/Mersenne_prime
- layer8 4y agohttps://primes.utm.edu/top20/page.php?id=57 https://primes.utm.edu/top20/page.php?id=57, linked in the article, begs to differ.
- krasin 4y agoThank you! You're right, this is not about a Mersenne prime, but about Repunit prime. Sorry about that!
- googlryas 4y agoNo, this is just on the mersenne prime forum. If you read [1] from the link it tells you OP is right.
- happytoexplain 4y agoI think the parent is right. This seems to be a decimal repunit, not binary. I can't find a positive reference, though.