The other night Patrick Laroche and his computer found a number
Not an ordinary number, but a number that’s humongous
So I don’t want your mince pies, you can keep your mulled wine
Cos all I want for Christmas is the world's biggest prime

It’s 2 to the power of 8 2 5 8 9 9 3 3, minus one
Mersenne 51, bring it with you and - *boom!* - a party has just begun
So give me, oh give me, this Christmas time
A twenty five million digit Christmas prime

Rarer than a cracker joke that actually makes you laugh
As useful as a pair of roller skates for a giraffe
If I had one I could do whatever I like with it
Well, anything I want, apart from dividing it
Except by itself and one

It’s 2 to the power of 8 2 5 8 9 9 3 3, minus one
If I tried to sing it in hours I’d need about sixty nine hundred and some extra seconds
So give me, oh give me, this christmas time
A twenty five million digit Christmas prime

Type it and text it or write it and post it,
Bake it in Stollen then slice it and toast it
If you can’t wrap it and send it in time
I’ll take 25 million decimal places of Pi

So give me, oh give me, this Christmas time
a twenty five million digit Christmas prime
One more recursion!

Give me, oh give me, this Christmas time
A twenty five million digit Christmas prime