1,617,887

109 × 14843

Starting at 1,617,887, the Collatz iteration reaches 1 after 207 steps. The first transition is 4853662; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 109 × 14843

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,632,840

Proper Divisor Sum 14,953

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #1617883 ← → #1617893

Radix Representation

Decimal	1617887
Binary	110001010111111011111 (21 bits)
Octal	0o6127737
Hexadecimal	0x18AFDF

Divisor Catalog (4)

1 109 14,843 1,617,887

Collatz Trajectory (207 steps to reach 1)

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

1,617,887 4,853,662 2,426,831 7,280,494 3,640,247 10,920,742 5,460,371 16,381,114 8,190,557 24,571,672 12,285,836 6,142,918 3,071,459 9,214,378 4,607,189 13,821,568 6,910,784 3,455,392 1,727,696 863,848 431,924 215,962 107,981 323,944 161,972 80,986 40,493 121,480 60,740 30,370 15,185 45,556 22,778 11,389 34,168 17,084 8,542 4,271 12,814 6,407 19,222 9,611 28,834 14,417 43,252 21,626 10,813 32,440 16,220 8,110 4,055 12,166 6,083 18,250 9,125 27,376 13,688 6,844 3,422 1,711

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