2 added 100 characters in body
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Javascript (ES6), 187187 181 bytes

-6 bytes thanks to @JustinMariner

a="7"[r="repeat"]r=s=>s[0].repeat(39),b="1"[r](39)a=r`7`,b=r`1`,i="8888881",c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k="3"[r](39)k=r`3`
_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk"z=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk".replace(/./g,eval)

Super simple approach; it could probably be golfed some more.

Explanation

a="7"[r="repeat"](39),b="1"[r]r=s=>s[0].repeat(39),i="8888881",                               // helper function to repeat character
a=r`7`,b=r`1`,i="8888881",c=188+i,d=11+i,j="188111",// Set the variables (a-k) to different
c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k=r`3`               // parts of the prime
g=j+111,h=g+1,k="3"[r](39)       

_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk" // Replace all letters in the string
    .replace(/./g,eval)                             // with the value of the variable

Example code snippet (with some helper code to add line breaks in the output)

a="7"[r="repeat"]r=s=>s[0].repeat(39),b="1"[r](39)a=r`7`,b=r`1`,i="8888881",c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k="3"[r](39)k=r`3`
z=_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk".replace(/./g,eval)
o.innerText=z().replace(/.{39}/g,"$&\n")
<pre id=o>

Javascript (ES6), 187 bytes

a="7"[r="repeat"](39),b="1"[r](39),i="8888881",c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k="3"[r](39)
_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk".replace(/./g,eval)

Super simple approach; it could probably be golfed some more.

Explanation

a="7"[r="repeat"](39),b="1"[r](39),i="8888881",     // Set the variables (a-k) to different
c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,         // parts of the prime
g=j+111,h=g+1,k="3"[r](39)       

_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk" // Replace all letters in the string
    .replace(/./g,eval)                             // with the value of the variable

Example code snippet (with some helper code to add line breaks in the output)

a="7"[r="repeat"](39),b="1"[r](39),i="8888881",c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k="3"[r](39)
z=_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk".replace(/./g,eval)
o.innerText=z().replace(/.{39}/g,"$&\n")
<pre id=o>

Javascript (ES6), 187 181 bytes

-6 bytes thanks to @JustinMariner

r=s=>s[0].repeat(39),a=r`7`,b=r`1`,i="8888881",c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k=r`3`
z=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk".replace(/./g,eval)

Super simple approach; it could probably be golfed some more.

Explanation

r=s=>s[0].repeat(39),                               // helper function to repeat character
a=r`7`,b=r`1`,i="8888881",c=188+i,d=11+i,j="188111",// Set the variables (a-k) to different
e=j+1188,f=j+188,g=j+111,h=g+1,k=r`3`               // parts of the prime       

_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk" // Replace all letters in the string
    .replace(/./g,eval)                             // with the value of the variable

Example code snippet (with some helper code to add line breaks in the output)

r=s=>s[0].repeat(39),a=r`7`,b=r`1`,i="8888881",c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k=r`3`
z=_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk".replace(/./g,eval)
o.innerText=z().replace(/.{39}/g,"$&\n")
<pre id=o>

1
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Javascript (ES6), 187 bytes

a="7"[r="repeat"](39),b="1"[r](39),i="8888881",c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k="3"[r](39)
_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk".replace(/./g,eval)

Super simple approach; it could probably be golfed some more.

Explanation

a="7"[r="repeat"](39),b="1"[r](39),i="8888881",     // Set the variables (a-k) to different
c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,         // parts of the prime
g=j+111,h=g+1,k="3"[r](39)       

_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk" // Replace all letters in the string
    .replace(/./g,eval)                             // with the value of the variable

Example code snippet (with some helper code to add line breaks in the output)

a="7"[r="repeat"](39),b="1"[r](39),i="8888881",c=188+i,d=11+i,j="188111",e=j+1188,f=j+188,g=j+111,h=g+1,k="3"[r](39)
z=_=>"aaaabbccdd1eeff1eeghccgj8888hhgf1hhff1hhdd1bbk".replace(/./g,eval)
o.innerText=z().replace(/.{39}/g,"$&\n")
<pre id=o>