1,722,278

2 × 861139

Starting at 1,722,278, the Collatz iteration reaches 1 after 114 steps. The first transition is 861139; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 861139

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,583,420

Proper Divisor Sum 861,142

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1722251 ← → #1722283

Radix Representation

Decimal	1722278
Binary	110100100011110100110 (21 bits)
Octal	0o6443646
Hexadecimal	0x1A47A6

Divisor Catalog (4)

1 2 861,139 1,722,278

Collatz Trajectory (114 steps to reach 1)

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

1,722,278 861,139 2,583,418 1,291,709 3,875,128 1,937,564 968,782 484,391 1,453,174 726,587 2,179,762 1,089,881 3,269,644 1,634,822 817,411 2,452,234 1,226,117 3,678,352 1,839,176 919,588 459,794 229,897 689,692 344,846 172,423 517,270 258,635 775,906 387,953 1,163,860 581,930 290,965 872,896 436,448 218,224 109,112 54,556 27,278 13,639 40,918 20,459 61,378 30,689 92,068 46,034 23,017 69,052 34,526 17,263 51,790 25,895 77,686 38,843 116,530 58,265 174,796 87,398 43,699 131,098 65,549

← Previous Integer #1,722,277 Browse Full Index Next Integer #1,722,279 →