1,287,247

13 × 83 × 1193

Starting at 1,287,247, the Collatz iteration reaches 1 after 248 steps. The first transition is 3861742; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 13 × 83 × 1193

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 1,404,144

Proper Divisor Sum 116,897

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #1287239 ← → #1287289

Radix Representation

Decimal	1287247
Binary	100111010010001001111 (21 bits)
Octal	0o4722117
Hexadecimal	0x13A44F

Divisor Catalog (8)

1 13 83 1,079 1,193 15,509 99,019 1,287,247

Collatz Trajectory (248 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

1,287,247 3,861,742 1,930,871 5,792,614 2,896,307 8,688,922 4,344,461 13,033,384 6,516,692 3,258,346 1,629,173 4,887,520 2,443,760 1,221,880 610,940 305,470 152,735 458,206 229,103 687,310 343,655 1,030,966 515,483 1,546,450 773,225 2,319,676 1,159,838 579,919 1,739,758 869,879 2,609,638 1,304,819 3,914,458 1,957,229 5,871,688 2,935,844 1,467,922 733,961 2,201,884 1,100,942 550,471 1,651,414 825,707 2,477,122 1,238,561 3,715,684 1,857,842 928,921 2,786,764 1,393,382 696,691 2,090,074 1,045,037 3,135,112 1,567,556 783,778 391,889 1,175,668 587,834 293,917

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