103

This number is a prime.

The "Gödel Code" for the word FOXTROT contains 103 decimal digits. Longer than any letter in the NATO Phonetic Alphabet (Alfa-Zulu). [Honaker]

A 116252718750​, 
B 126549297400319587938067556680330478718512220​, 
C 20194901948267217839018728287420415124151392820360​, 
D 833143468021550307316406250000​, 
E 1602302009605762500000, 
F 5051690607024954179010179893239071469494516923352311358251857714821860897146935224605560302734375000000​,
G 52754204988843750000000,
H 18478269411645510070000708007812500000000,
I 67939538643524160000,
J 1312736671231405826729030115169078090910076550483224710581928719180917750000000000,
K 46723126600104034500000000000,
L 688905000000000000​,
M 132324872400000000000,
N 8125874138560062910137743601493047743667635427563822773710937500000000000000,
O 185280690471924772779927545401344000,
P 210000000000000000,
Q 74284098949096853302886400000,
R 322366034239817959383642175680000000000000,
S 3795662919494318722708025280474805080475238400000,
T 66050754992353410652665600000000000000,
U 10723890009193816615419130183121829604565018053348609927956523266048000000000,
V 386805489821561152262500957843301996383380003645661756342665216000,
W 749052176126504624234060514486543964496375917554490041332742511040151552000000000,
X 43583638688782314429699855241539747840,
Y 72645686886652946011545600000000000000,
Z 95724945709235937630308342513664000000000000.