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[PRIFACTR.8xg] Prime factorization program for TI-83+/84+
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| Input "NUM:",M | |
| If fPart(M | |
| Then | |
| Disp "ERR: NUM IS NOT INT" | |
| Stop | |
| End | |
| 0->C | |
| 2->T | |
| M->I | |
| While I>1 and T<sqrt(M | |
| I/T->I | |
| If fPart(I | |
| Then | |
| If C>0 | |
| prgmPRNTFCTR | |
| 0->C | |
| If T=2 | |
| Then | |
| 3->T | |
| Else | |
| T+2->T | |
| End | |
| Else | |
| C+1->C | |
| End | |
| End | |
| If not(I=1 | |
| Then | |
| 1->C | |
| I->T | |
| End | |
| prgmPRNTFCTR |
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| T->N | |
| prgmZNUM2STR | |
| Str1->Str2 | |
| C->N | |
| prgmZNUM2STR | |
| Disp Str2+"^"+Str1 |
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| "? | |
| For(X,1,1+log(N+not(N | |
| sub("0123456789",iPart(10fPart(N10^(-X)))+1,1)+Ans | |
| End | |
| sub(Ans,1,length(Ans)-1->Str1 |
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ZNUM2STR taken from http://tibasicdev.wikidot.com/number-to-string2