Authors of GNU MP (in chronological order of initial contribution)

Torbjörn Granlund	Main author

John Amanatides		Original version of mpz/pprime_p.c
Paul Zimmermann		mpn/generic/mul_fft.c, mpn/generic/dc_divrem_n.c,
			new mpz/powm.c, improved Toom3 code.
Ken Weber		mpn/generic/gcd.c mpn/generic/bdivmod.c
Bennet Yee		mpz/jacobi.c mpz/legendre.c
Andreas Schwab		mpn/m68k/lshift.S, mpn/m68k/rshift.S
Robert Harley		mpn/generic/mul_n.c, files in mpn/arm
Linus Nordberg		Random number framework, original autoconfery
Kent Boortz		MacOS 9 port
Kevin Ryde		Most x86 assembly, new autoconfery, and countless other
			things (please see the GMP manual for complete list)
Gerardo Ballabio	gmpxx.h and C++ istream input
Pedro Gimeno		Mersenne Twister random generator, other random number
			revisions
Jason Moxham		New mpz/fac_ui.c and gen-fac_ui.c

Contributors to MPIR (and authors whose code we use)

Brian Gladman        Windows MSVC port and intel format x86_64 code
                     Port of tune, speed, try to MSVC.
William Hart         Build system modifications and intel format x86_64 code
                     Added mpn version of Toom 4 and Toom 7 multiplication routines.
Gonzalo Tornaria     Patches to config.guess and mpirbench
Mariah Lennow        Patches to mpirbench and build failure reports
Jason Worth Martin   Core 2 assembly support, merge of Möhler's GCD patches
Michael Abshoff      Build system patches and failure reports, valgrinding, build testing
Niels Möhler         GCD patches
Jason Moxham	   Dramatic speed improvements for K8, K10 and Core 2 assembler
                     code. Refactoring CPU detection code. Numerous bug and build fixes.
Pierrick Gaudry      AMD 64 assembly support
Paul Zimmermann      mpz implementation of Toom 4 
Marco Bodrato        mpz implementation of Toom 7