www.mikescher.com/www/statics/euler/Euler_Problem-058.php

<?php

return 
[
	'number'      => 58,
	'date'        => '2015-05-13',
	'title'       => 'Spiral primes',
	'abbreviated' => false,
	'steps'       => 78283096,
	'time'        => 12199,
	'width'       => 50,
	'height'      => 17,
	'value'       => 26241,
];